7[1]Belyayeva, D. A Model of Conceptual Structure Mapping[ D]. Doctoral Dissertation. University of Florida. 1997.
8[2]Berk- Seligson, Linguistic Constrains on Intrasentential Code - switching: a St. udy of Spanish/Hebrew Bilingualism[J]. Language in Society, 1986,(15):313 -348.
9[3]Blom, J. & Gumperz, J. Social Meaning in Structure[A ]. In G umperz, J. & Hymes, D. (eds.),Directions in Sociolinguistics [ C ]. New York:Holt, Rinehart, Winston. 1972:409 - 434.
10[4]Disciullo, A., Muysken, P. & Singh, R. Government and Code - switching[ J ]. Journal of Linguistics, (22): 1 - 24.