Citazione APA

Manning, G., & Curtis, K. (2009). The art of leadership (3rd ed.). McGraw-Hill Irwin.

Stile di citazione Chicago

Manning, George, e Kent Curtis. The Art of Leadership. 3rd ed. New York, NY: McGraw-Hill Irwin, 2009.

Citazione MLA

Manning, George, e Kent Curtis. The Art of Leadership. 3rd ed. McGraw-Hill Irwin, 2009.