Morgan, M. J. (1972). Fixed-ratio performance under conditions of delayed reinforcement.
शिकागो स्टाइल उद्धरणMorgan, M. J. Fixed-ratio Performance Under Conditions of Delayed Reinforcement. 1972.
एमएलए उद्धरणMorgan, M. J. Fixed-ratio Performance Under Conditions of Delayed Reinforcement. 1972.
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