Não informado. (1950). Educational Researcher. American Educational Research Association.
Chicago-Zitierstil (17. Ausg.)Não informado. Educational Researcher. Washington: American Educational Research Association, 1950.
MLA-Zitierstil (8. Ausg.)Não informado. Educational Researcher. American Educational Research Association, 1950.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.