APA (7th ed.) Citation

Willerman, L. (1979). The psychology of individual and group differences. W. H. Freeman.

Chicago Style (17th ed.) Citation

Willerman, Lee. The Psychology of Individual and Group Differences. San Francisco: W. H. Freeman, 1979.

MLA (8th ed.) Citation

Willerman, Lee. The Psychology of Individual and Group Differences. W. H. Freeman, 1979.

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