Ripple, R. E. (1971). Readings in learning and human abilities: Educational psychology (2d ed.). Harper & Row.
Čikaški stil citiranja (17. izdanje)Ripple, Richard E. Readings in Learning and Human Abilities: Educational Psychology. 2d ed. New York: Harper & Row, 1971.
MLA način citiranja (8. izdanje)Ripple, Richard E. Readings in Learning and Human Abilities: Educational Psychology. 2d ed. Harper & Row, 1971.
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