Lawrence, D. H., & Festinger, L. (1962). Deterrents and reinforcement: The psychology of insufficient reward. Stanford University Press.
Chicago-viite (17. p.)Lawrence, Douglas H., ja Leon Festinger. Deterrents and Reinforcement: The Psychology of Insufficient Reward. Stanford, Calif: Stanford University Press, 1962.
MLA-viite (9. p.)Lawrence, Douglas H., ja Leon Festinger. Deterrents and Reinforcement: The Psychology of Insufficient Reward. Stanford University Press, 1962.
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