Mudzielwana, Ndileleni Paulinah; Joubert, Ina; Phatudi, Nkidi Caroline; Hartell, Cycil George(University of Venda, School of Human and Social Sciences, 2012)
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)