Não informado. (1953). Nebraska Symposium on Motivation. University of Nebraska, Department of Psychology.
Chicago-Zitierstil (17. Ausg.)Não informado. Nebraska Symposium on Motivation. Lincoln, Neb: University of Nebraska, Department of Psychology, 1953.
MLA-Zitierstil (8. Ausg.)Não informado. Nebraska Symposium on Motivation. University of Nebraska, Department of Psychology, 1953.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.