APA aipamena

Allen, M. (2007). IELTS Graduation: Student's book. Oxford: Macmillan.

Chicago Style aipamena

Allen, Mark. IELTS Graduation: Student's Book. Oxford: Macmillan, 2007.

MLA aipamena

Allen, Mark. IELTS Graduation: Student's Book. Oxford: Macmillan, 2007.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.