References
- DRUCKER , P F . 1985 . Managing in turbulent times. New York: Harper & Row
- NKUHLU , W L . 1988 . “ Evaluation of capitalism and socialism as models for economic modernisation and stability in Southern Africa. ” . Edited by: Van Vuuren , D. J. et al (Eds.), South Africa: the challenge of reform. Pinetown: Owen Burgess Publishers