Lua APA (7ú heag.)
ebrary, Inc, Macaulay, R. K. S., & Fought, C. (2004). Sociolinguistic variation. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)
ebrary, Inc, Ronald K. S. Macaulay, agus Carmen Fought. Sociolinguistic Variation. Oxford ; New York: Oxford University Press, 2004.
Lua MLA (9ú heag.)
ebrary, Inc, et al. Sociolinguistic Variation. Oxford University Press, 2004.
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