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)
Fasina, Folorunso Oludayo; Sirdar, Mohamed Mahmoud; Bisschop, S.P.R. (Shahn)(Agricultural Research Council, ARC-OVI and the University of Pretoria, 2008-01)