Carin, A. A., & Sund, R. B. (1989). Guided discovery activities for elementary school science (2nd ed.). Merrill.
Chicago Style (17. basım) AtıfCarin, Arthur A., ve Robert B. Sund. Guided Discovery Activities for Elementary School Science. 2nd ed. Columbus, Ohio: Merrill, 1989.
MLA (9th ed.) AtıfCarin, Arthur A., ve Robert B. Sund. Guided Discovery Activities for Elementary School Science. 2nd ed. Merrill, 1989.
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