Dyfyniad APA

Warren, H. C. (1922). Elements of human psychology. Houghton Mifflin company.

Dyfyniad Arddull Chicago

Warren, Howard C. Elements of Human Psychology. New York [etc.]: Houghton Mifflin company, 1922.

Dyfyniad MLA

Warren, Howard C. Elements of Human Psychology. Houghton Mifflin company, 1922.

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