APA (7. basım) Alıntı

Callahan, D. (1971). Ethics and population limitation. Population Council.

Chicago Style (17. basım) Atıf

Callahan, Daniel. Ethics and Population Limitation. New York: Population Council, 1971.

MLA (9th ed.) Atıf

Callahan, Daniel. Ethics and Population Limitation. Population Council, 1971.