HarrisDorothy V., Involvement in Sport: A Somatopsychic Rationale for Physical Activity.Lea and Febiger, 1973.
2.
GrahamPeter, “Intramural Sports Programs: The Role of Competition,”Journal of the National Intramural Recreational Sports Association, Vol. 1, No. 1, 1977, pp. 21–24.
3.
OrlickT.D., “ Games of Acceptance and the Psycho-Social Adjustment.”The Humanistic and Mental Health Aspects of Sports, Exercise and Recreation.Chicago, American Medical Association, 1976, pp. 60–66.
4.
MortoranaS.V., and KuhnEileen, Managing Academic Change, Washington, Josey-Ross, 1975.
5.
SherifM., “Experiments in Group Conflict,”Science American, 195 (32), November 1956, pp. 54–58.
