Cita APA (7th ed.)
Ehrlich, P. R. (1968). The population bomb. Ballantine Books.
Cita Chicago (17th ed.)
Ehrlich, Paul R. The Population Bomb. New York: Ballantine Books, 1968.
Cita MLA (9th ed.)
Ehrlich, Paul R. The Population Bomb. Ballantine Books, 1968.
Atenció: Aquestes cites poden no estar 100% correctes.