(1992). Encyclopedia of Educational Research / editor in chief, Marvin C. Alkin ; sponsored by the American Educational Research Association.
Chicago-viite (17. p.)Encyclopedia of Educational Research / Editor in Chief, Marvin C. Alkin ; Sponsored by the American Educational Research Association. 1992.
MLA-viite (9. p.)Encyclopedia of Educational Research / Editor in Chief, Marvin C. Alkin ; Sponsored by the American Educational Research Association. 1992.
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