Swan, Michael (1957), British Guiana, London, England, U.K.: Her Majesty's Stationery Office, OCLC 253238145, Mount Roraima is the point where the boundaries of Venezuela, Brazil and British Guiana actually meet, and a stone stands on its summit, placed there by the International Commission in 1931.
im Thurn, Everard (August 1885), "The Ascent of Mount Roraima", Proceedings of the Royal Geographical Society and Monthly Record of Geography, New Monthly Series (London, England, U.K.: Blackwell Publishing, on behalf of the Royal Geographical Society, with the Institute of British Geographers) 7 (8): 497–521, doi:10.2307/1800077, ISSN 0266-626X, JSTOR 1800077, OCLC 51205375,
