Selby, Kalien; Sutherland, Margaret Mary(Graduate School of Business Leadership and the Department of Business Management, University of South Africa, 2006)
Beaty, David; Adonisi, Mandla; Taylor, Terence(Graduate School of Business Leadership and the Department of Business Management, University of South Africa, 2007)
Douglas, Richard; Sutherland, Margaret Mary(Graduate School of Business Leadership and the Department of Business Management, University of South Africa, 2009)