American Psychological Association
Salk, Jonas, & Salk, Jonathan ( 1981 ). World Population and Human Values ( 00 ed. ). Harper & Row Publishers.
Modern Language Association
Salk, Jonas and Salk, Jonathan. World Population and Human Values . Harper & Row Publishers. 1981
Chicago Citation
Salk, Jonas and Salk, Jonathan. World Population and Human Values . 00 .New York
: Harper & Row Publishers, 1981.
American Medical Association
Salk, Jonas and Salk, Jonathan. World Population and Human Values . Harper & Row Publishers; 1981.