Van Heerden, Cornelius Hendrik, 1957-; Kotze, Theuns G.; Bruwer, Johan(Southern African Alliance for Sport Science, Physical Education and Recreation, 2004)
Van Heerden, Neels, 1957-; Van Heerden, Cornelius Hendrik, 1957-; Kuiper, Angelique; Saar, Honorata Maria(Southern African Alliance for Sport Science, Physical Education and Recreation, 2008)
Van Heerden, Cornelius Hendrik, 1957-; Van Heerden, Neels, 1957-(Africa Association for Health, Physical Education, Recreation, Sport and Dance, 2005-09)