1. George Alexander L. 1979. “Case Studies and Theory Development: The Method of Structured, Focused Comparison.” In Diplomacy New Approaches in History, Theory, and Policy, ed. Lauren Paul Gordon, New York: The Free Press.
2. Martin W. James III. 2011. A Political History of the Civil War in Angola 1974–1990. New Jersey, USA: Transaction Publishers.
3. Jacqueline Audrey Kalley. 1999. Southern African Political History: A Chronology of Key Political Events from Independence to Mid-1997. Westport, CT and London: Greenwood, 36
4. See also Abiodun Alao. 1994. Brothers at War: Dissidence and Rebellion in Southern Africa. London: British Academic Press, XIX–XXI.
5. Inge Tvedten. 1997. Angola: Struggle for Peace and Reconstruction. Boulder, Colorado, USA: Westview Press, 38–39.