APA引文

Gairns, R. (2003). Natural English: Intermediate. Puzzle Book. Oxford: Oxford Univ. Press.

Trích dẫn kiểu Chicago

Gairns, Ruth. Natural English: Intermediate. Puzzle Book. Oxford: Oxford Univ. Press, 2003.

MLA引文

Gairns, Ruth. Natural English: Intermediate. Puzzle Book. Oxford: Oxford Univ. Press, 2003.

警告：這些引文格式不一定是100％准確.