American Educational Research Association & Ebel, R. L. (1969). Encyclopedia of educational research: A project of the American Educational Research Association (4. ed.). Collier-Macmillan.
Citazione stile Chigago Style (17a edizione)American Educational Research Association e Robert L. Ebel. Encyclopedia of Educational Research: A Project of the American Educational Research Association. 4. ed. London: Collier-Macmillan, 1969.
Citatione MLA (9a ed.)American Educational Research Association e Robert L. Ebel. Encyclopedia of Educational Research: A Project of the American Educational Research Association. 4. ed. Collier-Macmillan, 1969.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.
