O'Fahey, R. S. Kingdoms of the Sudan / R. S. O'Fahey and J. L. Spaulding - Barnes & Noble Import Division : New York Methuen : London ; distributed by Harper & Row 1974 - ix, 235 p. : maps ; 19 cm. Includes index. 'Sources and bibliography': p. 215-223. ISBN: 0416774504 LCCN: 75-311365 //r905 Subjects--Geographic Terms: Sudan--History--To 1820Sennar (Kingdom)Darfur (Sudan)--History