APA aipamena

Dubicka, I., & Iwonna Dubicka; Margaret O'Keeffe. (2011). Market leader: Advanced business English course book. Harlow: Pearson Longman,Financial Times.

Chicago Style aipamena

Dubicka, Iwonna, và Iwonna Dubicka; Margaret O'Keeffe. Market Leader: Advanced Business English Course Book. Harlow: Pearson Longman,Financial Times, 2011.

MLA aipamena

Dubicka, Iwonna, và Iwonna Dubicka; Margaret O'Keeffe. Market Leader: Advanced Business English Course Book. Harlow: Pearson Longman,Financial Times, 2011.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.