Údar
American Alliance for Health, Physical Education, Recreation, and Dance
2
International Council for Health, Physical Education, Recreation, Sport and Dance
2
American Alliance for Health, Physical Education, and Recreation
1
American Association for Health, Physical Education, and Recreation
1
Association of Outdoor Recreation and Education
1
Fundação Técnica e Científica do Desporto (Portugal)
1
Illinois Association for Health, Physical Education, Recreation and Dance
1
National Association for Campus Activities (U.S.)
1
National Geographic Society (U.S.)
1
Pennsylvania Association of Health, Physical Education, Recreation, and Dance
1
Strong (History Museum)
1
Strong National Museum of Play
1
Western Kentucky University. Research Foundation
1
Wilderness Education Association (U.S.)
1