APA (7th ed.) Citation

Knovel (Firm) & Hilyard, J. (2010). International Petroleum Encyclopedia 2010. Pennwell Corp..

Chicago Style (17th ed.) Citation

Knovel (Firm) and Joseph Hilyard. International Petroleum Encyclopedia 2010. Tulsa, Okla.: Pennwell Corp., 2010.

MLA (9th ed.) Citation

Knovel (Firm) and Joseph Hilyard. International Petroleum Encyclopedia 2010. Pennwell Corp., 2010.

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