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)