Apodaca, O. (1997). Cartel, price hike: No place in a liberalized oil industry. Manila Times.
Lua i Stíl Chicago (17ú heag.)Apodaca, Odette. "Cartel, Price Hike: No Place in a Liberalized Oil Industry." Manila Times 1997.
Lua MLA (9ú heag.)Apodaca, Odette. "Cartel, Price Hike: No Place in a Liberalized Oil Industry." Manila Times, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.