APA

Burgess S., Acklam R., . (2000). First certificate Gold. : Longman.

Chicago

Burgess S, Acklam R, . 2000. First certificate Gold. : Longman.

Harvard

Burgess S., Acklam R., . (2000). First certificate Gold. : Longman.

MLA

Burgess S, Acklam R, . First certificate Gold. : Longman. 2000.