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izlaidumi no Edward L. Deci

Cover for Edward L. Deci · Intrinsic Motivation and Self-Determination in Human Behavior - Perspectives in Social Psychology (Paperback Book) [Softcover reprint of the original 1st ed. 1985 edition] (2013)

Softcover reprint of the original 1st ed. 1985 edition

Intrinsic Motivation and Self-De... (2013)

Cover for Edward L. Deci · Intrinsic Motivation - Perspectives in Social Psychology (Paperback Book) [Softcover reprint of the original 1st ed. 1975 edition] (2011)

Softcover reprint of the original 1st ed. 1975 edition

Intrinsic Motivation - Perspecti... (2011)

Cover for Edward L. Deci · Why We Do What We Do: Understanding Self-Motivation (Paperback Book) (1996)

Why We Do What We Do: Understand... (1996)

Cover for Edward L. Deci · Intrinsic Motivation and Self-Determination in Human Behavior - Perspectives in Social Psychology (Hardcover Book) [1985 edition] (1985)

Intrinsic Motivation and Self-De... (1985)