Salk, J., & Salk, J. (1981). World population and human values: A new reality. Harper & Row.
Lua i Stíl Chicago (17ú heag.)Salk, Jonas, agus Jonathan Salk. World Population and Human Values: A New Reality. New York: Harper & Row, 1981.
Lua MLA (9ú heag.)Salk, Jonas, agus Jonathan Salk. World Population and Human Values: A New Reality. Harper & Row, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.