M. D. D. Newitt; Professor Malyn Newitt (1995). A History of Mozambique. Indiana University Press. p. 416. ISBN0-253-34006-3. Archived from the original on 15 April 2021. Retrieved 15 April 2021.
Encyclopedia Britannica. Encyclopedia Britannica, Incorporated. 1970. p. 863. Archived from the original on 15 April 2021. Retrieved 15 April 2021.
Fritz Zadow (1941). Koloniale Revision. W. Conrad & Company. p. 176. Archived from the original on 2021-12-25. Retrieved 2022-04-04.
M. D. D. Newitt; Professor Malyn Newitt (1995). A History of Mozambique. Indiana University Press. p. 416. ISBN0-253-34006-3. Archived from the original on 15 April 2021. Retrieved 15 April 2021.
Encyclopedia Britannica. Encyclopedia Britannica, Incorporated. 1970. p. 863. Archived from the original on 15 April 2021. Retrieved 15 April 2021.
Fritz Zadow (1941). Koloniale Revision. W. Conrad & Company. p. 176. Archived from the original on 2021-12-25. Retrieved 2022-04-04.