APA引文

Potten, H., & Potten, J. (2001). Clockwise: Elementary classbook. Oxford: Oxford University Press.

Trích dẫn kiểu Chicago

Potten, Heather, và Jonathan Potten. Clockwise: Elementary Classbook. Oxford: Oxford University Press, 2001.

MLA引文

Potten, Heather, và Jonathan Potten. Clockwise: Elementary Classbook. Oxford: Oxford University Press, 2001.

警告：這些引文格式不一定是100％准確.