APA引文

Demko, G. J. (1992). Why in the world: Adventures in geography. New York: Anchor Books.

Trích dẫn kiểu Chicago

Demko, George J. Why in the World: Adventures in Geography. New York: Anchor Books, 1992.

MLA引文

Demko, George J. Why in the World: Adventures in Geography. New York: Anchor Books, 1992.

警告：這些引文格式不一定是100％准確.