Cita APA (7th ed.)

Manning, G. (2019). The art of leadership (Sixth edition.). McGraw-Hill Education.

Cita Chicago (17th ed.)

Manning, George. The Art of Leadership. Sixth edition. New York, New York: McGraw-Hill Education, 2019.

Cita MLA (9th ed.)

Manning, George. The Art of Leadership. Sixth edition. McGraw-Hill Education, 2019.