APA aipamena

Hopkims, D., & Cullen, P. (2007). Grammar for IELTS with Answers. New york: Cambridge University Press.

Chicago Style aipamena

Hopkims, Diana, và Pauline Cullen. Grammar for IELTS With Answers. New york: Cambridge University Press, 2007.

MLA aipamena

Hopkims, Diana, và Pauline Cullen. Grammar for IELTS With Answers. New york: Cambridge University Press, 2007.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.