1. Alosio D. B.(2006).Improving homework completion and accuracy: Interdependent group contingencies with randomly selected components[Psy.D. Hofstra University]. ProQuest Dissertations & Theses Global. https://search.proquest.com/pqdtglobal/docview/305318936/abstract/87B2BDD683A5441EPQ/2
2. Andrews H. B. &Williams R. L.(1970).The effects of group contingent reinforcement on student behavior[Doctoral Dissertation]. University of Tennessee. https://eric.ed.gov/?id=ED049492
3. Punishing Parents for the Crimes of their Children