National Association of State Directors of Teacher Education and Certification. (1963). Guidelines for science and mathematics in the preparation program of elementary school teachers. AAAS.
Citace podle Chicago (17th ed.)National Association of State Directors of Teacher Education and Certification. Guidelines for Science and Mathematics in the Preparation Program of Elementary School Teachers. Washington, DC: AAAS, 1963.
Citace podle MLA (9th ed.)National Association of State Directors of Teacher Education and Certification. Guidelines for Science and Mathematics in the Preparation Program of Elementary School Teachers. AAAS, 1963.
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