^ abSouth Africa–Zimbabwe Boundary(PDF) (Report). International Boundary Study No. 117. United States Department of State. 29 October 1971. Archived from the original(PDF) on 23 September 2003. Retrieved 26 April 2013.
^ abBrownlie, Ian (1979). "Rhodesia (Zimbabwe)–South Africa". African Boundaries: A Legal and Diplomatic Encyclopaedia. London: C. Hurst & Co. pp. 1299–1303. ISBN0903983877.