Dyfyniad APA

Johnson, D. M. (1948). Essentials of psychology: An introductory textbook. McGraw-Hill Book Co.

Dyfyniad Arddull Chicago

Johnson, Donald McEwen. Essentials of Psychology: An Introductory Textbook. New York: McGraw-Hill Book Co, 1948.

Dyfyniad MLA

Johnson, Donald McEwen. Essentials of Psychology: An Introductory Textbook. McGraw-Hill Book Co, 1948.

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