APA (7th ed.) Citation

Seliger, H. W., & Vago, R. M. (1991). First language attrition. Cambridge University Press.

Chicago Style (17th ed.) Citation

Seliger, Herbert W., and Robert M. Vago. First Language Attrition. Cambridge: Cambridge University Press, 1991.

MLA (9th ed.) Citation

Seliger, Herbert W., and Robert M. Vago. First Language Attrition. Cambridge University Press, 1991.