Smith, K. U., & Smith, M. F. (1966). Cybernetic principles of learning and educational design. Holt.
Čikaški stil citiranja (17. izdanje)Smith, Karl Ulrich, i Margaret Foltz Smith. Cybernetic Principles of Learning and Educational Design. New York: Holt, 1966.
MLA način citiranja (9. izdanje)Smith, Karl Ulrich, i Margaret Foltz Smith. Cybernetic Principles of Learning and Educational Design. Holt, 1966.
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