Fr. J. dos Santos (1609), Ethiopia Oriental e varia historia de cousas Notaveis do Oriente, Pt. III. English translation is from Samuel Purchas's 1625 Haklyutus Posthumus, (1905) ed., Glasgow, vol. 10: p.220-21
"Notícias dadas por Manoel Caetano Pereira, comerciante, que se entranhou pelo interior da África", as published in José Acúrsio das Neves (1830) Considerações Políticas e Comerciais sobre os Descobrimentos e Possessões na África e na Ásia. Lisbon: Imprensa Regia. p.373
Howard, Dr. J. Keir (2005). "Arnot, Frederick Stanley". Dictionary of African Christian Biography. Archived from the original on 27 September 2007. Retrieved 14 December 2011.
Howard, Dr. J. Keir (2005). "Arnot, Frederick Stanley". Dictionary of African Christian Biography. Archived from the original on 27 September 2007. Retrieved 14 December 2011.
One or more of the preceding sentences incorporates text from a publication now in the public domain: Cana, Frank (1911). "Zambezi". In Chisholm, Hugh (ed.). Encyclopædia Britannica. Vol. 28 (11th ed.). Cambridge University Press. pp. 951–953.