Tohutoro APA (7th ed.)

Langenkamp, R. D. (1982). Oil business fundamentals: Exploration, leasing, drilling, production, marketing. PennWell Books.

Tohutoru Kātū Chicago

Langenkamp, R. D. Oil Business Fundamentals: Exploration, Leasing, Drilling, Production, Marketing. Tulsa, Okla.: PennWell Books, 1982.

Tohutoro MLA

Langenkamp, R. D. Oil Business Fundamentals: Exploration, Leasing, Drilling, Production, Marketing. PennWell Books, 1982.

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