Powell, R. A. (2009). Introduction to learning and behavior (3rd ed.). Wadsworth.
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Chicago-čujuhus (17. p.)
Powell, Russell A. Introduction to Learning and Behavior. 3rd ed. Nairobi: Wadsworth, 2009.
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MLA-čujuhus (9. p.)
Powell, Russell A. Introduction to Learning and Behavior. 3rd ed. Wadsworth, 2009.
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