Cita APA (7th ed.)

Manning, G., & Curtis, K. (2007). The art of leadership (2nd ed.). McGraw-Hill Irwin.

Cita Chicago (17th ed.)

Manning, George, i Kent Curtis. The Art of Leadership. 2nd ed. Boston: McGraw-Hill Irwin, 2007.

Cita MLA (8th ed.)

Manning, George, i Kent Curtis. The Art of Leadership. 2nd ed. McGraw-Hill Irwin, 2007.