Crisis. Boulder, CA: Westview Press. p. 1. Suliman, Osman (2010). The DarfurConflict: Geography or Institutions?. Taylor & Francis. p. 115. ISBN 978-0-203-83616-3
University Press. New York. ISBN 978-0-231-70414-4 Richard Cockett Sudan: Darfur and the failure of an African state. 2010. Hobbs the Printers Ltd., Totten