Van Heerden, Neels, 1957-; Van Heerden, Cornelius Hendrik, 1957-; Schreuder, A.N.; Gouverneur, M.(Faculty of Economic and Management Sciences, University of Pretoria, 2000-03)
Wiese, Melanie; Van Heerden, Cornelius Hendrik, 1957-; Jordaan, Yolanda; North, Ernest J.(College of Economic and Management Sciences, University of South Africa, 2009-04)
North, Ernest J.; Millard, Sollie M.(Innovatio Publishers (Germany), Media Tenor (South Africa) and the Institute for Media Analysis in South Africa (Imasa), 2003)
Van Heerden, Cornelius Hendrik, 1957-; Van Heerden, Neels, 1957-; Green, M.; Van Tonder, Estelle(Africa Association for Health, Physical Education, Recreation, Sport and Dance, 2007-12)
Harmse, Chris; Jordaan, Andre Cillie; Jordaan, Yolanda(University of Wisconsin Press in cooperation with the Institute for Media Analysis in South Africa (iMasa) and the Department of Journalism at Stellenbosch University, South Africa, 2001)