Hilyard, J. (2010). International petroleum encyclopedia 2010. Pennwell.
Chicago Style (17th ed.) CitationHilyard, Joseph. International Petroleum Encyclopedia 2010. Tulsa, Oklahoma: Pennwell, 2010.
MLA (9th ed.) CitationHilyard, Joseph. International Petroleum Encyclopedia 2010. Pennwell, 2010.
Warning: These citations may not always be 100% accurate.