APA

PYE D., GREENALL S., . (1996). CAE Listening and Speaking skills. Cambridge: Cambridge University Press.

Chicago

PYE Diana, GREENALL Simon, . 1996. CAE Listening and Speaking skills. Cambridge: Cambridge University Press.

Harvard

PYE D., GREENALL S., . (1996). CAE Listening and Speaking skills. Cambridge: Cambridge University Press.

MLA

PYE Diana, GREENALL Simon, . CAE Listening and Speaking skills. Cambridge: Cambridge University Press. 1996.