Marx, M. H., & Hillix, W. A. (1963). Systems and theories in psychology. McGraw-Hill.
Chicago Style (17. basım) AtıfMarx, Melvin Herman, ve William Alex Hillix. Systems and Theories in Psychology. New York: McGraw-Hill, 1963.
MLA (9th ed.) AtıfMarx, Melvin Herman, ve William Alex Hillix. Systems and Theories in Psychology. McGraw-Hill, 1963.
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