APA citiranje

Whitney, N. (1994). Open doors (student's book 2): Có sách. Oxford: Oxford University Press.

Trích dẫn kiểu Chicago

Whitney, Norman. Open Doors (student's Book 2): Có Sách. Oxford: Oxford University Press, 1994.

MLA citiranje

Whitney, Norman. Open Doors (student's Book 2): Có Sách. Oxford: Oxford University Press, 1994.