APA-referens (7:e uppl.)

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

Chicago-referens (17:e uppl.)

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

MLA-referens (9:e uppl.)

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