Kwenani, K.M. (Kingsley Mabuku); Terblanche, S.E. (Stephanus Esaias), 1940-(South African Society for Agricultural Extension, Department of Agriculture, Ecomomics, Extensions and Rural Development, University of Pretoria, 2009)
Marx-Pienaar, Nadene Johanna Maria Magdalena; Erasmus, Alet C. (Aletta Catharina)(South African Association of Family Ecology and Consumer Sciences, 2006)