O'Ballance, E. (1977). The Secret War in the Sudan: 1955-1972. Faber and Faber.
Cita Chicago (17th ed.)O'Ballance, Edgar. The Secret War in the Sudan: 1955-1972. London: Faber and Faber, 1977.
Cita MLA (9th ed.)O'Ballance, Edgar. The Secret War in the Sudan: 1955-1972. Faber and Faber, 1977.
Atenció: Aquestes cites poden no estar 100% correctes.