1. Howell, D.C. (1995). Fundemental statistics for the behavioural sciences. London: Duxbury Press.
2. Huysamen, G.K. (1994). Methodology for the social and behavioural sciences. Pretoria: Southern Book.
3. Kwela, S.M. (2001). Organisational commitment and job satisfaction of non-academic personnel at a tertiary institution (Unpublished masters thesis). Potchefstroom University, Vanderbijlpark, South Africa.
4. Leiter, M.P. (1993). Burnout as a developmental process: Consideration of models. In W.B. Schaufeli, C. Maslach, & T. Marek (Eds.), Professional burnout: Recent developments in theory and practice (pp. 237–250). Washington, DC: Taylor and Francis.
5. Makhubu, N. (2011). Dispatch Online. Retrieved from http://www.dispatch.co.za/news/article/535