APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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

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