Van Wyk, Johannes G.U.; Goslin, Anneliese E. (Anna Elizabeth); Steyn, B.J.M. (Barend Johannes Marthinus)(Africa Association for Health, Physical Education, Recreation, Sport and Dance, 2007-09)
O'Neil, John Wesley; Steyn, B.J.M. (Barend Johannes Marthinus)(Southern African Alliance for Sport Science, Physical Education and Recreation, 2007)
Goslin, Anneliese E. (Anna Elizabeth); Van Wyk, Gerrit J.U.; Welman, Natasha(Africa Association for Health, Physical Education, Recreation, Sport and Dance, 2007-09)