APA aipamena

Black, M. (2006). Objective IELTS: Intermediate Student's book. Cambridge, UK: Cambridge University Press.

Chicago Style aipamena

Black, Michael. Objective IELTS: Intermediate Student's Book. Cambridge, UK: Cambridge University Press, 2006.

MLA aipamena

Black, Michael. Objective IELTS: Intermediate Student's Book. Cambridge, UK: Cambridge University Press, 2006.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.