APA

Pye D., Greenall S., . (1996). CAE Listening and Speaking Skills. New York: Cambridge University Press.

Chicago

Pye D, Greenall S, . 1996. CAE Listening and Speaking Skills. New York: Cambridge University Press.

Harvard

Pye D., Greenall S., . (1996). CAE Listening and Speaking Skills. New York: Cambridge University Press.

MLA

Pye D, Greenall S, . CAE Listening and Speaking Skills. New York: Cambridge University Press. 1996.