Cratty, B. J. (1971). Active learning: Games to enhance academic abilities. Prentice-Hall.
Čikaški stil citiranja (17. izdanje)Cratty, Bryant J. Active Learning: Games to Enhance Academic Abilities. Englewood Cliffs, N. J: Prentice-Hall, 1971.
MLA način citiranja (9. izdanje)Cratty, Bryant J. Active Learning: Games to Enhance Academic Abilities. Prentice-Hall, 1971.
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