Macale, A. M., Baccay, E. S., & Carascal, L. C. (2011). Development and validation of word problems in chemistry gas concepts. Alipato : a Journal of Basic Education.
Citace podle Chicago (17th ed.)Macale, Aprhodite M., Elisa S. Baccay, a Liza C. Carascal. "Development and Validation of Word Problems in Chemistry Gas Concepts." Alipato : A Journal of Basic Education 2011.
Citace podle MLA (9th ed.)Macale, Aprhodite M., et al. "Development and Validation of Word Problems in Chemistry Gas Concepts." Alipato : A Journal of Basic Education, 2011.
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