Tohutoro APA (7th ed.)
Lewis, D. J. (1963). Scientific principles of psychology. Prentice - hall.
Tohutoru Kātū Chicago (17th ed.)
Lewis, Donald J. Scientific Principles of Psychology. New Jersey: Prentice - hall, 1963.
Tohutoro MLA (9th ed.)
Lewis, Donald J. Scientific Principles of Psychology. Prentice - hall, 1963.
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