Cita APA

Levorsen, A. I., & Berry, F. A. F. (2004). Geology of petroleum (2d ed.). CBS.

Chicago Edition Citation

Levorsen, A. I., i Frederick A. F. Berry. Geology of Petroleum. 2d ed. New Delhi: CBS, 2004.

Cita MLA

Levorsen, A. I., i Frederick A. F. Berry. Geology of Petroleum. 2d ed. CBS, 2004.