Burton, R. F., J. H. Speke (1859. június 13.). „Explorations in Eastern Africa”. Proceedings of the Royal Geographical Society of London3 (6), 348–358. o. DOI:10.2307/1799169.
Burton, R. F. (1864. november 14.). „Lake Tanganyika, Ptolemy's Western Lake-Reservoir of the Nile”. Proceedings of the Royal Geographical Society of London9 (1), 6–14. o. DOI:10.2307/1799295.
oxforddnb.com
Roy Bridges, Speke, John Hanning (1827–1864) (subscription or library card required), Oxford Dictionary of National Biography, Oxford University Press, Sept 2004; online edn, May 2006. Accessed 15 Aug 2008.