Cita APA (7th ed.)

Manning, G., & Curtis, K. (2012). The art of leadership (4th ed.). McGraw-Hill.

Cita Chicago (17th ed.)

Manning, George, i Kent Curtis. The Art of Leadership. 4th ed. New York: McGraw-Hill, 2012.

Cita MLA (8th ed.)

Manning, George, i Kent Curtis. The Art of Leadership. 4th ed. McGraw-Hill, 2012.