APA

Mortimer C., . (1985). Elements of Pronunciation. Intensive practice for intermediate and more advanced students. Cambridge: Cambridge University Press.

Chicago

Mortimer C, . 1985. Elements of Pronunciation. Intensive practice for intermediate and more advanced students. Cambridge: Cambridge University Press.

Harvard

Mortimer C., . (1985). Elements of Pronunciation. Intensive practice for intermediate and more advanced students. Cambridge: Cambridge University Press.

MLA

Mortimer C, . Elements of Pronunciation. Intensive practice for intermediate and more advanced students. Cambridge: Cambridge University Press. 1985.