APA

Acklam R., Burgess S., . (2001). Gold Advanced. Coursebook. Harlow: Longman.

Chicago

Acklam R, Burgess S, . 2001. Gold Advanced. Coursebook. Harlow: Longman.

Harvard

Acklam R., Burgess S., . (2001). Gold Advanced. Coursebook. Harlow: Longman.

MLA

Acklam R, Burgess S, . Gold Advanced. Coursebook. Harlow: Longman. 2001.