National Association of State Directors of Teacher Education and Certification. (1963). Secondary school science and mathematics teachers. National Science Foundation.
Cytowanie według stylu Chicago (wyd. 17)National Association of State Directors of Teacher Education and Certification. Secondary School Science and Mathematics Teachers. Wash.: National Science Foundation, 1963.
Cytowanie według stylu MLA (wyd. 8)National Association of State Directors of Teacher Education and Certification. Secondary School Science and Mathematics Teachers. National Science Foundation, 1963.
Uwaga: Te cytaty mogą odróżniać się od wytycznej twojego fakultetu..