Kingsley, H. L. (1957). The nature and conditions of learning (2nd ed.). Prentice-Hall.
Chicago Style (17. basım) AtıfKingsley, Howard L. The Nature and Conditions of Learning. 2nd ed. Englewood Cliffs, N.J.: Prentice-Hall, 1957.
MLA (8th ed.) AtıfKingsley, Howard L. The Nature and Conditions of Learning. 2nd ed. Prentice-Hall, 1957.
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