Lua APA (7ú heag.)

Enos, J. L. (1962). Petroleum progress and profits; a history of process innovation. MIT Press.

Lua i Stíl Chicago (17ú heag.)

Enos, John Lawrence. Petroleum Progress and Profits; a History of Process Innovation. Cambridge, Mass: MIT Press, 1962.

Lua MLA (9ú heag.)

Enos, John Lawrence. Petroleum Progress and Profits; a History of Process Innovation. MIT Press, 1962.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.