APA (7th ed.) Zitazioa

O'Ballance, E. (1977). The Secret War in the Sudan: 1955-1972. Faber and Faber.

Chicago Style (17th ed.) Zitazioa

O'Ballance, Edgar. The Secret War in the Sudan: 1955-1972. London: Faber and Faber, 1977.

MLA (9th ed.) Zitazioa

O'Ballance, Edgar. The Secret War in the Sudan: 1955-1972. Faber and Faber, 1977.