References
Ahmad Sabri, A. A., Mohammed Salleh, R. T. A., & Di Biase, B. (2021). Instructing Malaysian Children with HFASD in English as a Second Language. Asiatic, 15(1), 92–114.
Alwi, H., Dardjowidjojo, S., Lapoliwa, H., & Moeliono, A. (2003). Tata Bahasa Baku Bahasa Indonesia. Balai Pustaka.![Google Scholar](https://benjamins.com/logos/google-scholar.svg)
Barner, D., Lui, T., & Zapf, J. (2012). Is two a plural marker in early child language? Developmental Psychology 48(1), 10–17. ![DOI logo](https://benjamins.com/logos/doi-logo.svg)
![Google Scholar](https://benjamins.com/logos/google-scholar.svg)
Brown, R. (1973). A first language: The early stages. Harvard University Press. ![DOI logo](https://benjamins.com/logos/doi-logo.svg)
![Google Scholar](https://benjamins.com/logos/google-scholar.svg)
Charters, H., Dao, L., & Jansen, L. (2011). Reassessing the applicability of Processability Theory: The case of nominal plural. Second Language Research, 27(4), 509–533. ![DOI logo](https://benjamins.com/logos/doi-logo.svg)
![Google Scholar](https://benjamins.com/logos/google-scholar.svg)
Corbett, G. G. (2000). Number. Cambridge University Press. ![DOI logo](https://benjamins.com/logos/doi-logo.svg)
![Google Scholar](https://benjamins.com/logos/google-scholar.svg)
Dalrymple, M., & Mofu, S. (2012). Plural semantics, reduplication, and numeral modification in Indonesian. Journal of Semantics, 29, 229–260. ![DOI logo](https://benjamins.com/logos/doi-logo.svg)
![Google Scholar](https://benjamins.com/logos/google-scholar.svg)
Dao, L. H. T. (2007). Foreign language acquisition: Processes and constraints (Unpublished doctoral dissertation). The Australian National University.
Dardjowidjojo, S., & MacDonald, R. R. (1967). A student’s reference grammar of modern formal Indonesia. Georgetown University Press.![Google Scholar](https://benjamins.com/logos/google-scholar.svg)
Di Biase, B. (1999). The acquisition of inflectional morphology in learners of Italian L2 with some reference to the role of phonological word structure. Paper presented at the EuroSLA, 9, June 10–12, Lund, Sweden.
Di Biase, B. (2002). Focusing strategies in second language development: A classroom-based study of Italian L2 in primary school. In B. D. Biase (Ed.), Developing a second language, acquisition, processing and pedagogy of Arabic, Chinese, English, Italian, Japanese, Swedish (pp. 95–120). Language Australia.![Google Scholar](https://benjamins.com/logos/google-scholar.svg)
Di Biase, B. (2007). A processability approach to the acquisition of Italian as a second language: Theory and applications. (Ph.D. thesis). Australian National University, Canberra. Retrieved from [URL].
Di Biase, B. (2008). Focus-on-form and development in L2 learning. In J.-U. Keßler (Ed.), Processability approaches to second language development and second language learning (pp. 197–219). Cambridge Scholars.![Google Scholar](https://benjamins.com/logos/google-scholar.svg)
Di Biase, B., & Kawaguchi, S. (2002). Exploring the typological plausibility of Processability Theory: Language development in Italian second language and Japanese second language. Second Language Research, 18(3), 274–302. ![DOI logo](https://benjamins.com/logos/doi-logo.svg)
![Google Scholar](https://benjamins.com/logos/google-scholar.svg)
Di Biase, B., Kawaguchi, S., & Yamaguchi, Y. (2015). The development of English as a second language. In C. Bettoni & B. D. Biase (Eds.), Grammatical development in second languages: Exploring the boundaries of Processability Theory (Eurosla Monographs Series 3) (pp. 85–115). Eurosla.![Google Scholar](https://benjamins.com/logos/google-scholar.svg)
Doughty, C. J., & Long, M. H. (Eds.). (2003). The handbook of second language acquisition. Blackwell. ![DOI logo](https://benjamins.com/logos/doi-logo.svg)
![Google Scholar](https://benjamins.com/logos/google-scholar.svg)
Dryer, M. S. (2013). Definite articles. In M. S. Dryer & M. Haspelmath (Eds.), The world atlas of language structures online. Max Planck Institute for the Science of Human History. Retrieved on 10 July 2022 from [URL]
Dulay, H. C., & Burt, M. K. (1973). Should we teach children syntax? Language Learning, 23(2), 245–258. ![DOI logo](https://benjamins.com/logos/doi-logo.svg)
![Google Scholar](https://benjamins.com/logos/google-scholar.svg)
Ettlinger, M., & Zapf, J. (2011). The role of phonology in children’s acquisition of the plural. Language Acquisition, 18(4), 294–313. ![DOI logo](https://benjamins.com/logos/doi-logo.svg)
![Google Scholar](https://benjamins.com/logos/google-scholar.svg)
Hakuta, K. (1974). A preliminary report on the development of grammatical morphemes in a Japanese girl learning English as a second language. Bilingual Education Project. OISE.![Google Scholar](https://benjamins.com/logos/google-scholar.svg)
Hakuta, K. (1976). A case study of a Japanese child learning English. Language Learning, 26, 321–351. ![DOI logo](https://benjamins.com/logos/doi-logo.svg)
![Google Scholar](https://benjamins.com/logos/google-scholar.svg)
Haspelmath, M. (2013). Occurrence of nominal plurality. In M. S. Dryer & M. Haspelmath (Eds.), The world atlas of language structures online. Max Planck Institute for the Science of Human History. Retrieved on 10 July 2022 from [URL]
Hawkins, J. A. (2009). Germanic Languages. In B. Comrie (Ed.), The world’s major languages (pp. 51–58). Routledge. ![DOI logo](https://benjamins.com/logos/doi-logo.svg)
![Google Scholar](https://benjamins.com/logos/google-scholar.svg)
Huebner, T. (1983). A longitudinal analysis of the acquisition of English. Karoma.![Google Scholar](https://benjamins.com/logos/google-scholar.svg)
Huebner, T. (1985). System and variability in interlanguage syntax. Language Learning, 35(2), 141–163. ![DOI logo](https://benjamins.com/logos/doi-logo.svg)
![Google Scholar](https://benjamins.com/logos/google-scholar.svg)
Itani-Adams, Y. (2007). Lexical and grammatical development in Japanese-English bilingual first language acquisition. In F. Mansouri (Ed.), Second language acquisition research: Theory-construction and testing (pp. 165–190). Cambridge Scholars.![Google Scholar](https://benjamins.com/logos/google-scholar.svg)
Jia, G. (2003). The acquisition of the English plural morpheme by native Mandarin Chinese-speaking children. Journal of Speech, Language, and Hearing Research, 46(6), 1297–1311. ![DOI logo](https://benjamins.com/logos/doi-logo.svg)
![Google Scholar](https://benjamins.com/logos/google-scholar.svg)
Koyanagi, K. (2004). Language acquisition theories for teachers of Japanese. Three A Network.![Google Scholar](https://benjamins.com/logos/google-scholar.svg)
Krashen, S. D. (1976). Formal and informal linguistic environments in language acquisition and language learning. TESOL Quarterly, 10(2), 157–168. ![DOI logo](https://benjamins.com/logos/doi-logo.svg)
![Google Scholar](https://benjamins.com/logos/google-scholar.svg)
Krashen, S. D. (1981). Second language acquisition and second language learning. Pergamon.![Google Scholar](https://benjamins.com/logos/google-scholar.svg)
Kroeger, P. R. (2005). Analyzing grammar: An introduction. Cambridge University Press. ![DOI logo](https://benjamins.com/logos/doi-logo.svg)
![Google Scholar](https://benjamins.com/logos/google-scholar.svg)
Larsen-Freeman, D., & Long, M. H. (1991). An introduction to second language acquisition research. Routledge.![Google Scholar](https://benjamins.com/logos/google-scholar.svg)
Lauder, A. (2008). The status and function of English in Indonesia: A review of key factors. Makara Seri Sosial Humaniora, 12(1), 9–20. ![DOI logo](https://benjamins.com/logos/doi-logo.svg)
![Google Scholar](https://benjamins.com/logos/google-scholar.svg)
Mackey, A. (1999). Input, interaction, and second language development: An empirical study of question formation in ESL. Studies in Second Language Acquisition, 21(4), 557–587. ![DOI logo](https://benjamins.com/logos/doi-logo.svg)
![Google Scholar](https://benjamins.com/logos/google-scholar.svg)
Mohamed Salleh, R. T. A. (2017). Bilingual first language acquisition in Malay and English: A morphological and suprasegmental study in the development of plural expressions in a bilingual child (Unpublished doctoral dissertation). Western Sydney University.
Mohamed Salleh, R. T. A., Kawaguchi, S., Jones, C., & Di Biase, B. (2016). The development of plural expressions in a Malay-English bilingual child. An International Journal of Asian Literatures, Cultures and Englishes, 10(2), 111–131. ![DOI logo](https://benjamins.com/logos/doi-logo.svg)
![Google Scholar](https://benjamins.com/logos/google-scholar.svg)
Nababan, P. W. J. (1991). Language in education: The case of Indonesia. International Review of Education, 37(1), 115–131. ![DOI logo](https://benjamins.com/logos/doi-logo.svg)
![Google Scholar](https://benjamins.com/logos/google-scholar.svg)
Pallotti, G. (2007). An operational definition of the emergence criterion. Applied Linguistics 28, 361–382. ![DOI logo](https://benjamins.com/logos/doi-logo.svg)
![Google Scholar](https://benjamins.com/logos/google-scholar.svg)
Pienemann, M. (1984). Psychological constraints on the teachability of languages. Studies in Second Language Acquisition, 6, 186–214. ![DOI logo](https://benjamins.com/logos/doi-logo.svg)
![Google Scholar](https://benjamins.com/logos/google-scholar.svg)
Pienemann, M. (1989). Is language teachable? Psycholinguistic experiments and hypotheses. Applied Linguistics, 10(1), 52–79. ![DOI logo](https://benjamins.com/logos/doi-logo.svg)
![Google Scholar](https://benjamins.com/logos/google-scholar.svg)
Pienemann, M., Di Biase, B., & Kawaguchi, S. (2005). Extending Processability Theory. In M. Pienemann (Ed.), Cross-linguistic aspects of Processability Theory (pp. 199–251). John Benjamins. ![DOI logo](https://benjamins.com/logos/doi-logo.svg)
![Google Scholar](https://benjamins.com/logos/google-scholar.svg)
Robinson, P. (2001). Task complexity, task difficulty, and task production: Exploring interactions in a componential framework. Applied Linguistics, 22, 27–57. ![DOI logo](https://benjamins.com/logos/doi-logo.svg)
![Google Scholar](https://benjamins.com/logos/google-scholar.svg)
Sloetjes, H., & Wittenburg, P. (2008). ELAN (Version 5.0). Max Planck Institute for Psycholinguistics. Retrieved on 10 July 2022 from [URL]
Sneddon, J. N., Adeelar, A., Djenar, D. N., & Ewing, M. C. (2012). Indonesian: A comprehensive grammar. Routledge. ![DOI logo](https://benjamins.com/logos/doi-logo.svg)
![Google Scholar](https://benjamins.com/logos/google-scholar.svg)
Tadmor, U. (2009). Malay-Indonesian. In B. Comrie (Ed.), The world’s major languages (pp. 791–818). Routledge. ![DOI logo](https://benjamins.com/logos/doi-logo.svg)
![Google Scholar](https://benjamins.com/logos/google-scholar.svg)
Tsukamoto, S. (2014). Key Word in Context (KWIC) Concordance software (Version 5). Nihon University College of Humanities and Sciences. Retrieved on 10 July 2022 from [URL]
Uzir, S. F. A. B. S., & Mohamed Salleh, R. T. A. (2020). The development of English plural expressions among Malaysian kindergarten children. Paper presented at the International Conference on Language and Literature 2020 Kuala Lumpur, International Islamic University Malaysia (IIUM), 15–17 January 2020.
Yamaguchi, Y. (2010). The acquisition of English as a second language by a Japanese primary school child: a longitudinal study from a processability viewpoint (Unpublished doctoral dissertation). University of Western Sydney. [URL]