APA (7th ed.) Citation

Locke. (1991). The essence of leadership: The four keys to leading successfully. Lexington Books.

Chicago Style (17th ed.) Citation

Locke. The Essence of Leadership: The Four Keys to Leading Successfully. New York: Lexington Books, 1991.

MLA (8th ed.) Citation

Locke. The Essence of Leadership: The Four Keys to Leading Successfully. Lexington Books, 1991.

Warning: These citations may not always be 100% accurate.