3 October 1978
References

stanford,'The state inside South Africa between 1960 and 1990' from Stanford University's Online Classroom [online], available at: www.stanford.edu [Accessed 30 September 2013]|

Kalley, J.A.; Schoeman, E. & Andor, L.E. (eds)(1999). Southern African Political History: a chronology of key political events from independence to mid-1997, Westport: Greenwood