Eloff, Irma; Forsyth, Brian William Cameron; Finestone, Michelle; Ebersohn, L. (Liesel); Visser, M.J. (Maretha Johanna); Ferreira, Ronel; Boeving-Allen, Alex; Sikkema, Kathleen J.(Psychological Society of South Africa, 2011-03)
Page, J.A. (Jennifer Ann); Ebersohn, L. (Liesel); Rogan, John M.(Southern African Association for Research in Mathematics, Science and Technology Education, 2006-03)