Maree, J.G. (Kobus); Hislop-Esterhuysen, Natalie; Swanepoel, Andre; Van der Linde, Michael J. (Mike)(Suid Afrikaanse Akademie vir Wetenskap & Kuns, 2008-03)
Botha, Hanlie; Maree, J.G. (Kobus); Stols, Gerrit Hendrikus(Faculty of Education, University of the Free State (since April 2010) For older articles: Faculty of Education, University of Pretoria, 2013-12)