APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Langenkamp, Robert D. The Illustrated Petroleum Reference Dictionary. 4th edition. Tulsa, Oklahoma: Pennwell Books, 1994.

MLA (9th ed.) Citation

Langenkamp, Robert D. The Illustrated Petroleum Reference Dictionary. 4th edition. Pennwell Books, 1994.

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