References
- Bailey, Charles James. 1973. Variation and linguistic theory. Arlington, VA: Georgetown Center for Applied Linguistics.
- Bailey, Charles James. 1987. Variation Theory and so-called Sociolinguistic Grammars. Language and Communication 7(4). 269-291.10.1016/0271-5309(87)90018-8
- Kurath, Hans et al. (eds.) 1956-2001. Middle English Dictionary. Ann Arbor: University of Michigan Press.
- Labov, William. 1972. Sociolinguistic patterns. Philadelphia: Pennsylvania University Press.
- Milroy, Lesley & James Milroy. 1992. Social network and social class: Toward an integrated sociolinguistic model. Language in Society 21(1). 1-26.10.1017/S0047404500015013