5BROWN H D. Teaching by Principles.An Interactive Approach to Language Pedagogy[ M]. Clevedon.Prentice Hall, 1994.
6GAL, SUSAN. Language Shift. Social Determinants of Linguistic Change in Bilingual Austria[ M]. New York. Academic Press, 1979.
7FISHMAN J A. The Relationship Between Micro -and Macro -sociolingui -stics[ M ]//J. -P- Pride, J. Holmes ,eds. The Stud- y of who Speakes What Language to Whom and When. Harmondsworth. Penguin Books, 1972.
8GILES, HOWARD J COUPLAND. The Contexts of Accommodation Theory . Dimensions of Applied Sociolinguistics [ M ]. UK Cambridge University Press, 1991.
9GILES, HOWARD. Accent Mobility. A Model and Some Data[ J ]. Anthropological Linguistica,1973.
10GILES, H ST CLAIR H. Language and Social Psychology[ M]. Oxford .Basil Blackwell, 1979.