APA引文

Robert Allen. (2003). The penguin English dictionary. England: Penguin Books.

Trích dẫn kiểu Chicago

Robert Allen. The Penguin English Dictionary. England: Penguin Books, 2003.

MLA引文

Robert Allen. The Penguin English Dictionary. England: Penguin Books, 2003.

警告：這些引文格式不一定是100％准確.