Langenkamp, R. D. (1982). Oil business fundamentals: Exploration, leasing, drilling, production, marketing. PennWell Books.
Chicago Style (17th ed.) CitationLangenkamp, R. D. Oil Business Fundamentals: Exploration, Leasing, Drilling, Production, Marketing. Tulsa, Okla.: PennWell Books, 1982.
MLA (9th ed.) CitationLangenkamp, R. D. Oil Business Fundamentals: Exploration, Leasing, Drilling, Production, Marketing. PennWell Books, 1982.
Warning: These citations may not always be 100% accurate.