APA (7th ed.) Citation

Salk, J., & Salk, J. (1981). World population and human values: A new reality. Harper & Row.

Chicago Style (17th ed.) Citation

Salk, Jonas, and Jonathan Salk. World Population and Human Values: A New Reality. New York: Harper & Row, 1981.

MLA (9th ed.) Citation

Salk, Jonas, and Jonathan Salk. World Population and Human Values: A New Reality. Harper & Row, 1981.