APA (7th ed.) Citation

Langenkamp, R. D. (1994). The illustrated petroleum reference dictionary (4th ed.). PennWell Books.

Chicago Style (17th ed.) Citation

Langenkamp, Robert D. The Illustrated Petroleum Reference Dictionary. 4th ed. Tulsa, Okla.: PennWell Books, 1994.

MLA (8th ed.) Citation

Langenkamp, Robert D. The Illustrated Petroleum Reference Dictionary. 4th ed. PennWell Books, 1994.

Warning: These citations may not always be 100% accurate.