: North Eurasia Group, SIL International. Egland, Steven T., ed. 1978. La inteligibilidad interdialectal en México: Resultados de algunos sondeos. Mexico: Instituto Lingüístico de Verano. Ferreira, Jo-Anne and David Holbrook. 2002. Are they dying? The case of some French-lexifier creoles. La Torre 7(25): 367-397. Holbrook, David. 2001. "Exploring the potential for Creole language development through religious literature: the current sociolinguistic situation in Guyana, South America." La Torre 6(19): 75-90. Jernudd, Bjorn H. 1979. The language survey of Sudan. The first phase: a questionnaire survey in schools. Acta universitatis umensis 22. King, Julie K. and John Wayne King, editors. 1984. Languages of Sabah: a survey report. (Pacific Linguistics C, 78.) Canberra: Australian National University. Labov, William. 1982. The social stratification of English in New York City. Washington, D. C.: Center for Applied Linguistics. Lewis, M. Paul. 1987. "Un estudio de la sociología de lenguaje del idioma quiché." Winak 2(4): 249-55. Rensch, Calvin R. 1992. "The language environment of Hindko-speaking people." In Calvin R. Rensch, Calinda E. Hallberg and Clare F. O'Leary (eds.), Hindko and Gujari, 3-88. Sociolinguistic Survey of Northern Pakistan, 3. Islamabad: National Institute of Pakistan Studies and Summer Institute of Linguistics. Saskatchewan Indigenous Languages Committee. (1991). Socio-linguistic survey of Indigenous languages in Saskatchewan: On the critical list. Saskatoon, Sask.: Saskatchewan Indigenous Languages Committee. Statistics Canada. (1993). 1991 Aboriginal peoples survey: Language, tradition, health, lifestyle and social issues. Catalogue No. 89-533. Ottawa: Statistics Canada, Post Censal Surveys Program. Toba, Sueyoshi, Ingrid Toba and Novel Kishore Rai. 2002. UNESCO language survey report Nepal. Kathmandu: UNESCO. Vasishta, M., J. C. Woodward, and K. L. Wilson. 1978. Sign Language in India: Regional Variation within the Deaf Population. Indian Journal of Applied Linguistics 4 (2): 66–74. References: survey methodology Blair, Frank, 1990. Survey on a Shoestring: A Manual for Small-Scale Language Surveys. Dallas: Summer Institute of Linguistics and the University of Texas at Arlington. Casad, Eugene H. 1974. Dialect intelligibility testing. Summer Institute of Linguistics Publications in Linguistics and Related Fields, 38. Norman: Summer Institute of Linguistics of the University of Oklahoma. Casad, Eugene H. 1993. Language area surveys. International Journal of Applied Linguistics 8: 29-49. Ciupek-Reed, Julia. 2012. Participatory methods in sociolinguistic sign language survey: A case study in El Salvador. University of North Dakota MA thesis. Ciupek-Reed's thesis Cooper, R. L. and S. Carpenter. 1976. Language in the Market. In Language in Ethiopia, ed. by Bender, M. L., J. D. Bowen, R.