(1988). The enneagram: Understanding yourself and the others in your life / Helen Palmer.
Chicagoスタイル(17版)引用形式The Enneagram: Understanding Yourself and the Others in Your Life / Helen Palmer. 1988.
MLA(9版)引用形式The Enneagram: Understanding Yourself and the Others in Your Life / Helen Palmer. 1988.
警告: この引用は必ずしも正確ではありません.