Jooste, Julius; Steyn, B.J.M. (Barend Johannes Marthinus); Van den Berg, Linda(Southern African Alliance for Sport Science, Physical Education and Recreation, 2014)
Grant, C.C. (Catharina Cornelia); Rothschild, R.M.; Wood, Paola Silvia; Janse van Rensburg, Dina Christina; Collins, Robert Matthew; Du Toit, Peet J.(Africa Association for Health, Physical Education, Recreation, Sport and Dance, 2012-03)