Cita APA (7a ed.)

Acklam, R., & Burgess, S. (1996). Gold: First Certificate. Coursebook (3rd imp.). Longman.

Cita Chicago Style (17a ed.)

Acklam, Richard, y Sally Burgess. Gold: First Certificate. Coursebook. 3rd imp. Harlow: Longman, 1996.

Cita MLA (9a ed.)

Acklam, Richard, y Sally Burgess. Gold: First Certificate. Coursebook. 3rd imp. Longman, 1996.