Não informado. (1966). Hydrocarbon Processing. Gulf Publishing.
Lua i Stíl Chicago (17ú heag.)Não informado. Hydrocarbon Processing. Houston, Tex: Gulf Publishing, 1966.
Lua MLA (8ú heag.)Não informado. Hydrocarbon Processing. Gulf Publishing, 1966.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.