APA (7th ed.) Citation

Vernon, P. E. (1979). Intelligence: Heredity and environment. Freeman.

Chicago Style (17th ed.) Citation

Vernon, Philip E. Intelligence: Heredity and Environment. San Francisco: Freeman, 1979.

MLA (9th ed.) Citation

Vernon, Philip E. Intelligence: Heredity and Environment. Freeman, 1979.

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