APA aipamena

Helson, H., & Bevan, W. (1967). Contemporary approaches to psychology. Van Nostrand.

Chicago Style aipamena

Helson, Harry, and William Bevan. Contemporary Approaches to Psychology. Princeton, N.J: Van Nostrand, 1967.

MLA aipamena

Helson, Harry, and William Bevan. Contemporary Approaches to Psychology. Van Nostrand, 1967.

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