Welker, A. J. (1985). The oil and gas book. SciData Books.
Chicago Style (17th ed.) CitationWelker, Anthony J. The Oil and Gas Book. Tulsa: SciData Books, 1985.
MLA (9th ed.) CitationWelker, Anthony J. The Oil and Gas Book. SciData Books, 1985.
Warning: These citations may not always be 100% accurate.