Lee, B., & Covey, S. R. (1998). The power principle: Influence with honor (First Fireside edition.). Simon & Schuster.
Chicagoスタイル(17版)引用形式Lee, Blaine, , Stephen R. Covey. The Power Principle: Influence with Honor. First Fireside edition. New York, NY: Simon & Schuster, 1998.
MLA(9版)引用形式Lee, Blaine, , Stephen R. Covey. The Power Principle: Influence with Honor. First Fireside edition. Simon & Schuster, 1998.
警告: この引用は必ずしも正確ではありません.