APA Style

Yukl, G, A., Yukl, G. (1989). Leadership in Organizations (Second Edition) (2nd Edition). Englewood Cliffs, New Jersey: Prentice Hall, Inc.

MLA Style

Yukl, Gary, A.., Yukl, G.. "Leadership in Organizations (Second Edition)". 2nd Edition Englewood Cliffs, New Jersey: Prentice Hall, Inc, 1989. Text.