Fombad, Madeleine C.; Boon, J.A. (Johannes Anton); Bothma, T.J.D. (Theodorus Jan Daniel)(Department of Knowledge and Information Management, University of Johannesburg, 2009-06)
Mogotsi, Isaac C.; Boon, J.A. (Johannes Anton); Fletcher, Lizelle(Department of Knowledge and Information Management, University of Johannesburg, 2011-11-25)