Cita APA

Beck, R. C. (2000). Motivation: Theories and principles (4th ed.). Prentice Hall.

Citación estilo Chicago

Beck, Robert C. Motivation: Theories and Principles. 4th ed. Upper Saddle River, N.J: Prentice Hall, 2000.

Cita MLA

Beck, Robert C. Motivation: Theories and Principles. 4th ed. Prentice Hall, 2000.