Cronje, Johannes Christoffel; Adendorff, Debra Elizabeth; Meyer, Salome M.; Van Ryneveld, Linda(International Forum of Educational Technology & Society, 2006)
Du Toit, Pieter Hertzog; De Boer, Ann-Louise; Bothma, T.J.D. (Theodorus Jan Daniel); Scheepers, M.D. (Maria Detken)(Suid Afrikaanse Akademie vir Wetenskap & Kuns, 2012)