APA (7th ed.) Citation

Palmer, H. (1988). The enneagram: Understanding yourself and the others in your life. Harper San Francisco.

Chicago Style (17th ed.) Citation

Palmer, Helen. The Enneagram: Understanding Yourself and the Others in Your Life. New York, N.Y: Harper San Francisco, 1988.

MLA (9th ed.) Citation

Palmer, Helen. The Enneagram: Understanding Yourself and the Others in Your Life. Harper San Francisco, 1988.