APA Edition Citation

Beck, R. C. (1990). Motivation: Theories and principlels (3.). Prentice -Hall International.

Chicago Edition Citation

Beck, Robert C. Motivation: Theories and Principlels. 3. New Jersey: Prentice -Hall International, 1990.

MLA Edition Citation

Beck, Robert C. Motivation: Theories and Principlels. 3. Prentice -Hall International, 1990.