(1923). Oil field engineering. Gas Engine Pub. Co..
Lua i Stíl Chicago (17ú heag.)Oil Field Engineering. Cincinnati, Ohio: Gas Engine Pub. Co., 1923.
Lua MLA (8ú heag.)Oil Field Engineering. Gas Engine Pub. Co., 1923.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.