Tyler, L. E. (1947). The psychology of human differences. D. Appleton-Century Co.
Cita Chicago Style (17a ed.)Tyler, Leona Elizabeth. The Psychology of Human Differences. New York: D. Appleton-Century Co, 1947.
Cita MLA (9a ed.)Tyler, Leona Elizabeth. The Psychology of Human Differences. D. Appleton-Century Co, 1947.
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