APA引文

Roberts, J. M. (1980). The Pelican history of the world. Harmondsworth: Penguin Books.

Trích dẫn kiểu Chicago

Roberts, J. M. The Pelican History of the World. Harmondsworth: Penguin Books, 1980.

MLA引文

Roberts, J. M. The Pelican History of the World. Harmondsworth: Penguin Books, 1980.

警告：這些引文格式不一定是100％准確.