Lua APA (7ú heag.)
International Energy Agency & ProQuest (Firm). (2006). Angola: Towards an energy strategy. International Energy Agency.
Lua i Stíl Chicago (17ú heag.)
International Energy Agency agus ProQuest (Firm). Angola: Towards an Energy Strategy. Paris: International Energy Agency, 2006.
Lua MLA (9ú heag.)
International Energy Agency agus ProQuest (Firm). Angola: Towards an Energy Strategy. International Energy Agency, 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.