Gann, L. H. and Duignan, Peter, Burden of Empire – an Appraisal of Western Colonialism in Africa South of the Sahara, Pall Mall Press. London 1968. Reviewed in Harold G. Marcus (1968). "Review of Books". The Journal of Economic History. 28 (4): 677–679. doi:10.1017/S0022050700101329. S2CID153782510.
Risto Marjomaa, War on the Savannah: The Military Collapse of the Sokoto Caliphate under the Invasion of the British Empire, 1897–1903 – Reviewed in Anthony Clayton (2000). "Reviews of Books: War and Warfare". The Journal of African History. 41 (2): 318–320. doi:10.1017/s0021853700357735.
Bruce Vandervort; Lunn, Joe; Killingray, David; Omissi, David; Page, Melvin E.; Parsons, Timothy H. (2001). "Review: The Thin Black Line of Heroes". The Journal of Military History. 65 (4): 1067–1073. doi:10.2307/2677630. JSTOR2677630.
jstor.org
Bruce Vandervort; Lunn, Joe; Killingray, David; Omissi, David; Page, Melvin E.; Parsons, Timothy H. (2001). "Review: The Thin Black Line of Heroes". The Journal of Military History. 65 (4): 1067–1073. doi:10.2307/2677630. JSTOR2677630.
Gann, L. H. and Duignan, Peter, Burden of Empire – an Appraisal of Western Colonialism in Africa South of the Sahara, Pall Mall Press. London 1968. Reviewed in Harold G. Marcus (1968). "Review of Books". The Journal of Economic History. 28 (4): 677–679. doi:10.1017/S0022050700101329. S2CID153782510.