Mumpower, Jeryl L., and Stuart W Cook. 1978. “The Development of Interpersonal Attraction in Cooperating Interracial Groups: The Effects of Success-Failure, Race and Competence of Groupmates, and Helping a Less Competent Groupmate”. International Journal of Group Tensions 8: 18-50. Referenced from psycnet.apa.org: The development of interpersonal attraction in cooperating interracial groups: The effects of success-failure, race and competence of groupmates, and helping a less competent groupmate. Reference Link
