AIME. (1956). Transaction of the American Institute of mining and metalurgical: Petroleum development and technology 136/137. Volume 118/123. Petroleum Branch.
Lua i Stíl Chicago (17ú heag.)AIME. Transaction of the American Institute of Mining and Metalurgical: Petroleum Development and Technology 136/137. Volume 118/123. Petroleum Branch, 1956.
Lua MLA (8ú heag.)AIME. Transaction of the American Institute of Mining and Metalurgical: Petroleum Development and Technology 136/137. Volume 118/123. Petroleum Branch, 1956.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.