APA (7th ed.) Citation

Roberts, D. F. (1959). Natural selection in human populations. Pergamon.

Chicago Style (17th ed.) Citation

Roberts, D. F. Natural Selection in Human Populations. New York: Pergamon, 1959.

MLA (9th ed.) Citation

Roberts, D. F. Natural Selection in Human Populations. Pergamon, 1959.

Warning: These citations may not always be 100% accurate.