APA citiranje

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 citiranje

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

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