APA aipamena

Black, M. (2006). Objective IELTS Workbook with Answers. Intermediate. Cambridge University Press.

Chicago Style aipamena

Black, Michael. Objective IELTS Workbook With Answers. Intermediate. Cambridge University Press, 2006.

MLA aipamena

Black, Michael. Objective IELTS Workbook With Answers. Intermediate. Cambridge University Press, 2006.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.