Epstein, Y. M. (1977). Punishment and interpersonal attraction as factors affecting the decision to help another person. Xerox Univ. Microfilms.
Chicago-Zitierstil (17. Ausg.)Epstein, Yakov M. Punishment and Interpersonal Attraction as Factors Affecting the Decision to Help Another Person. Ann Arbor, Mich: Xerox Univ. Microfilms, 1977.
MLA-Zitierstil (9. Ausg.)Epstein, Yakov M. Punishment and Interpersonal Attraction as Factors Affecting the Decision to Help Another Person. Xerox Univ. Microfilms, 1977.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.