APA citiranje

Hopkins, D., & Cullen, P. (2007). Cambridge grammar for IELTS with answers: Self study grammar reference and practice. New York: Cambridge University Press.

Trích dẫn kiểu Chicago

Hopkins, Diana, và Pauline Cullen. Cambridge Grammar for IELTS With Answers: Self Study Grammar Reference and Practice. New York: Cambridge University Press, 2007.

MLA citiranje

Hopkins, Diana, và Pauline Cullen. Cambridge Grammar for IELTS With Answers: Self Study Grammar Reference and Practice. New York: Cambridge University Press, 2007.