Dokumentuaren aipamena

APA (7th ed.) Zitazioa
International Energy Agency & ProQuest (Firm). (2006). Angola: Towards an energy strategy. International Energy Agency.
Chicago Style (17th ed.) Zitazioa
International Energy Agency eta ProQuest (Firm). Angola: Towards an Energy Strategy. Paris: International Energy Agency, 2006.
MLA (9th ed.) Zitazioa
International Energy Agency eta ProQuest (Firm). Angola: Towards an Energy Strategy. International Energy Agency, 2006.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.