Gray, M. R. (1974). Tennis: What research tells the coach about. American Alliance for Health, Physical Education and Recreation.
Chicago-Zitierstil (17. Ausg.)Gray, Marvin R. Tennis: What Research Tells the Coach About. Washington, DC: American Alliance for Health, Physical Education and Recreation, 1974.
MLA-Zitierstil (9. Ausg.)Gray, Marvin R. Tennis: What Research Tells the Coach About. American Alliance for Health, Physical Education and Recreation, 1974.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.