Albó, X., “Social Constraints on Cochabamba Quechua”, Ph. D. Dissertation. Cornell University, 1970.
Gal, S., Language Shift. New York: Academic Press, 1979.
Gumperz, J., “Social network and language shift”, Working Paper 461. Berkeley: Language Behavior Research Laboratory, 1976.
Labov, W., The Social Stratification of English in New York City. Washington, D. C.: Center for Applied Linguistics, 1966.
Milroy, L. and McClenaghan, P., “Stereotyped reactions to four educated accents in Ulster”, Belfast Working Papers in Language and Linguistics, 21 (1977).
Romaine, S., “Problems in the investigation of linguistic attitudes in Scotland”, Work in Progress. Department of Linguistics, University of Edinburgh, No., 111 (1978), 11–30.
Romaine, S., “What is a speech community? “, Belfast Working Papers in Language and Linguistics, 41 (1980), 41–60 (= 1980a).