APA引文

Ehrlich, P. R. (1971). How to be a survivor: A plan to save spaceship earth. New York: Ballantine Books.

Trích dẫn kiểu Chicago

Ehrlich, Paul R. How to Be a Survivor: A Plan to Save Spaceship Earth. New York: Ballantine Books, 1971.

MLA引文

Ehrlich, Paul R. How to Be a Survivor: A Plan to Save Spaceship Earth. New York: Ballantine Books, 1971.

警告：這些引文格式不一定是100％准確.