APA (7th ed.) Citation

Palmer, H. (1988). The enneagram: Understanding yourself and the others in your life (1. ed.). Harper & Row.

Chicago Style (17th ed.) Citation

Palmer, Helen. The Enneagram: Understanding Yourself and the Others in Your Life. 1. ed. San Francisco, Calif. [u.a.]: Harper & Row, 1988.

MLA (8th ed.) Citation

Palmer, Helen. The Enneagram: Understanding Yourself and the Others in Your Life. 1. ed. Harper & Row, 1988.