APA (7th ed.) Zitazioa
Johnson, D. H. (2003). The root causes of Sudan's civil wars. Indiana University Press ; Fountain Publishers.
Chicago Style (17th ed.) Zitazioa
Johnson, Douglas H. The Root Causes of Sudan's Civil Wars. Bloomington : Kampala: Indiana University Press ; Fountain Publishers, 2003.
MLA (9th ed.) Zitazioa
Johnson, Douglas H. The Root Causes of Sudan's Civil Wars. Indiana University Press ; Fountain Publishers, 2003.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.