1. Harold MacMichael (1955) The Sudan (New York: Praeger), pp. 91–7.
2. E.E. Evans-Pritchard in 1973, quoted in D. Johnson (1988) ‘The Sudan Under the British’, Journal of African History [JAH], 29, 541.
3. A.H.M. Kirk-Greene (1982) ‘The Sudan Political Service: A Profile in the Sociology of Imperialism’, The International Journal of African Historical Studies 15, 21–48.
4. R. Collins (1972) ‘The Sudan Political Service: A Portrait of the “Imperialists”’, African Affairs, 71, 293–303.
5. E.A. Stanton (1914) ‘Progress in the Sudan’, Journal of the Royal African Society, 13, 365–8.