Broodryk, A., Coetzee, B., Pienaar, C., Sparks, M. Veröffentlicht in African Journal for Physical, Health Education, Recreation and Dance (2017)
Sparks, M., Coetzee, B. Veröffentlicht in 17th Annual Congress of the European College of Sport Science (ECSS), Bruges, 4. -7. July 2012 (2012)