Motivation

MLA

Beck, Robert C. Motivation : Theories and Principles. 5th ed. Upper Saddle River, N.J.: Pearson/Prentice Hall, 2004.

APA

Beck, R. C. (2004). Motivation : theories and principles. 5th ed. Upper Saddle River, N.J.: Pearson/Prentice Hall.

Chicago

Beck, Robert C. Motivation: Theories and Principles. 5th ed. Upper Saddle River, N.J.: Pearson/Prentice Hall, 2004.