LoyJohn W., BirrellSusan, and RoseDavid“The Professionalization of Attitudes Toward Play as a Function of Selected Social Identities and Level of Sport Participation,” Paper presented at the International Seminar on Play in Physical Education and Sport, Wingate Institute, Tel Aviv, Israel, March 31-April 3, 1975.
2.
MaloneyT. Lawrence, and PetrieBrian“The Professionalization of Attitudes Toward Play Among Canadian School Pupils as a Function of Sex, Grade, and Athletic Participation,”Journal of Leisure Research, 4: 184–185, 1974.
3.
WebbHarry“Professionalization of Attitudes Toward Play Among Adolescents,” in Aspects of Contemporary Sport Sociology, KenyonGerald S., editor. Chicago: Athletic Institute, pp. 161–187, 1969.
