APA

Burgess S., Acklam R., . (2003). Advanced Gold. : Longman.

Chicago

Burgess S, Acklam R, . 2003. Advanced Gold. : Longman.

Harvard

Burgess S., Acklam R., . (2003). Advanced Gold. : Longman.

MLA

Burgess S, Acklam R, . Advanced Gold. : Longman. 2003.