Tohutoro APA (7th ed.)
Plutchik, R. (1968). Foundations of experimental research. Harper & Row.
Tohutoru Kātū Chicago (17th ed.)
Plutchik, Robert. Foundations of Experimental Research. New York: Harper & Row, 1968.
Tohutoro MLA (9th ed.)
Plutchik, Robert. Foundations of Experimental Research. Harper & Row, 1968.
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