APA (7th ed.) Citation

Levorsen, A. I. (1954). Geology of petroleum. W. H. Freeman.

Chicago Style (17th ed.) Citation

Levorsen, A. I. Geology of Petroleum. San Francisco: W. H. Freeman, 1954.

MLA (9th ed.) Citation

Levorsen, A. I. Geology of Petroleum. W. H. Freeman, 1954.