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References

Bayley, Robert, Lucas, Ceil, & Rose, Mary (2000). Variation in American Sign Language: The case of Deaf. Journal of Sociolinguistics, 4(1), 81–107.

Hall, Kenneth R. (2011). A history of early Southeast Asia: Maritime trade and societal development, 100–1500. Lanham; Boulder; New York; Toronto; Plymouth, UK: Rowman & Littlefield publishers, Inc.

Labov, William (1969). Contraction, deletion and inherent variability of the English copula. Language, 45(4), 715–762.

Labov, William (2001). Principles of linguistic change, volume 2: Social factors. Oxford, UK; Cambridge, USA: Blackwell.

Maddieson, Ian (2013). Tone. In Matthew S. Dryer & Martin Haspelmath (Eds.), The world atlas of language structures online. Leipzig: Max Planck Institute for Evolutionary Anthropology. Available from [URL]

Schembri, Adam (2014). Sociolinguistic variation and change in sign languages. Plenary talk delivered at NWAV-AP 3, Victoria University of Wellington.

Stanford, James (2008). Sociotonetic analysis of Sui dialect contact. Language Variation and Change, 201, 409–450.