American Association of School Administrators, Biddle, B. J., & Ellena, W. J. (1964). Contemporary research on teacher effectiveness. Holt, Rinehart and Winston.
Lua i Stíl Chicago (17ú heag.)American Association of School Administrators, Bruce J. Biddle, agus William J. Ellena. Contemporary Research on Teacher Effectiveness. New York: Holt, Rinehart and Winston, 1964.
Lua MLA (9ú heag.)American Association of School Administrators, et al. Contemporary Research on Teacher Effectiveness. Holt, Rinehart and Winston, 1964.
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