Langenkamp, R. D. (1985). The Illustrated petroleum reference dictionary (3rd ed.). Pennwell Books.
Chicago Style (17th ed.) CitationLangenkamp, R. D. The Illustrated Petroleum Reference Dictionary. 3rd ed. Tulsa, Okla.: Pennwell Books, 1985.
MLA (9th ed.) CitationLangenkamp, R. D. The Illustrated Petroleum Reference Dictionary. 3rd ed. Pennwell Books, 1985.
Warning: These citations may not always be 100% accurate.