Não informado. (1953). Nebraska Symposium on Motivation. University of Nebraska, Department of Psychology.
Citace podle Chicago (17th ed.)Não informado. Nebraska Symposium on Motivation. Lincoln, Neb: University of Nebraska, Department of Psychology, 1953.
Citace podle MLA (8th ed.)Não informado. Nebraska Symposium on Motivation. University of Nebraska, Department of Psychology, 1953.
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