National Association of State Directors of Teacher Education and Certification. (1963). Secondary school science and mathematics teachers. National Science Foundation.
Čikaški stil citiranja (17. izdanje)National Association of State Directors of Teacher Education and Certification. Secondary School Science and Mathematics Teachers. Wash.: National Science Foundation, 1963.
MLA način citiranja (8. izdanje)National Association of State Directors of Teacher Education and Certification. Secondary School Science and Mathematics Teachers. National Science Foundation, 1963.
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