Tohutoro APA (7th ed.)
Wike, E. L. (1966). Secondary reinforcement: Selected experiments. Harper & Row.
Tohutoru Kātū Chicago (17th ed.)
Wike, Edward L. Secondary Reinforcement: Selected Experiments. New York: Harper & Row, 1966.
Tohutoro MLA (9th ed.)
Wike, Edward L. Secondary Reinforcement: Selected Experiments. Harper & Row, 1966.
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