Beck, R. C. (2000). Motivation: Theories and principles (4th ed.). Prentice Hall.
Chicago Style (17. basım) AtıfBeck, Robert C. Motivation: Theories and Principles. 4th ed. Upper Saddle River, N.J: Prentice Hall, 2000.
MLA (9th ed.) AtıfBeck, Robert C. Motivation: Theories and Principles. 4th ed. Prentice Hall, 2000.
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