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)
Goslin, Anneliese E. (Anna Elizabeth); Van der Klashorst, Engela; Kluka, Darlene Ann; Van Wyk, Johannes G.U.(The Australian Association of Adult and Community, 2016-04)
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)
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)
Van der Klashorst, Engela; Goslin, Anneliese E. (Anna Elizabeth); Van Wyk, Johannes G.U.; Kluka, Darlene Ann(Africa Association for Health, Physical Education, Recreation, Sport and Dance, 2012-12)