Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (8a ed.)

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