Jooste, Julius; Van Wyk, Johannes G.U.; Steyn, B.J.M. (Barend Johannes Marthinus)(Africa Association for Health, Physical Education, Recreation, Sport and Dance, 2013-03)
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)
Jooste, Julius; Toriola, Abel L.; Van Wyk, Johannes G.U.; Steyn, B.J.M. (Barend Johannes Marthinus)(Africa Association for Health, Physical Education, Recreation, Sport and Dance, 2014-03)