APA (7th ed.) Citation

Levorsen, A. Geology of petroleum (2nd ed.). W.H. Freeman.

Chicago Style (17th ed.) Citation

Levorsen, A.I. Geology of Petroleum. 2nd ed. San Francisco: W.H. Freeman.

MLA (9th ed.) Citation

Levorsen, A.I. Geology of Petroleum. 2nd ed. W.H. Freeman.

Warning: These citations may not always be 100% accurate.