APA aipamena

Cotton, D. (2004). Market leader: Course book. England: Longman.

Chicago Style aipamena

Cotton, David. Market Leader: Course Book. England: Longman, 2004.

MLA aipamena

Cotton, David. Market Leader: Course Book. England: Longman, 2004.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.