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Collelo, Thomas (1991). "Independence and the Rise of the MPLA Government". Angola: A Country Study. Washington, DC: GPO for the Library of Congress – via countrystudies.us.
Gato, Paulo Lukamba (2003). "Angola in Peace" (Interview). Interviewed by Charles Zorgbibe. African Geopolitics. Archived from the original on 27 September 2007. Retrieved 28 September 2007.