Central Intelligence Agency (2016). "Democratic Republic of the Congo". The World Factbook. Langley, Virginia: Central Intelligence Agency. Archived from the original on 31 August 2020. Retrieved 10 May 2016.
Central Intelligence Agency (2016). "Democratic Republic of the Congo". The World Factbook. Langley, Virginia: Central Intelligence Agency. Archived from the original on 31 August 2020. Retrieved 10 May 2016.