APA (7th ed.) Citation

Heimstra, N. W., & Ellingstad, V. S. (1972). Human behavior: A systems approach. Brooks/Cole Pub. Co..

Chicago Style (17th ed.) Citation

Heimstra, Norman W., and Vernon S. Ellingstad. Human Behavior: A Systems Approach. Monterey, Calif.: Brooks/Cole Pub. Co., 1972.

MLA (9th ed.) Citation

Heimstra, Norman W., and Vernon S. Ellingstad. Human Behavior: A Systems Approach. Brooks/Cole Pub. Co., 1972.