APA (7th ed.) Zitazioa
Ibrahim ,Ishak. (1982). Black Gold and Holy War: The Religious Secret Behind the Petrodollar. Haggai Institute.
Chicago Style (17th ed.) Zitazioa
Ibrahim ,Ishak. Black Gold and Holy War: The Religious Secret Behind the Petrodollar. Wilts: Haggai Institute, 1982.
MLA (9th ed.) Zitazioa
Ibrahim ,Ishak. Black Gold and Holy War: The Religious Secret Behind the Petrodollar. Haggai Institute, 1982.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.