Ray, W. J. (2006). Methods toward a science of behavior and experience. Belmont, CA : Thomson/Wadsworth.
Chicago-čujuhus (17. p.)Ray, William J. Methods Toward a Science of Behavior and Experience. Belmont, CA : Thomson/Wadsworth, 2006.
MLA-čujuhus (9. p.)Ray, William J. Methods Toward a Science of Behavior and Experience. Belmont, CA : Thomson/Wadsworth, 2006.
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