Giles, H. , Bourhis, R., & Taylor, D. M. (1977). Towards a theory of language in ethnic group relations. In H. Giles (Ed.), Language, ethnicity and intergroup relations. (pp. 307-348). London: Academic Press.
2.
Giles, H. , & Johnson, P. (1987). Ethnolinguistic identity theory: Asocial psychological approach to language maintenance. International Journal of the Sociology of Language, 68, 69-99.
