Motivation

MLA

Petri, Herbert L, and John M Govern. Motivation : Theory, Research, and Applications. 6th ed. Belmont, CA: Wadsworth, Cengage Learning, 2013.

APA

Petri, H. L, & Govern, J. M. (2013). Motivation : theory, research, and applications. 6th ed. Belmont, CA: Wadsworth, Cengage Learning.

Chicago

Petri, Herbert L., and John M Govern. Motivation: Theory, Research, and Applications. 6th ed. Belmont, CA: Wadsworth, Cengage Learning, 2013.