APA aipamena

Cotton, D. (2002). Market leader: Pre-Intermediate business English. England: Longman.

Chicago Style aipamena

Cotton, David. Market Leader: Pre-Intermediate Business English. England: Longman, 2002.

MLA aipamena

Cotton, David. Market Leader: Pre-Intermediate Business English. England: Longman, 2002.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.