APA (7th ed.) Citation

Nagy, B., & Colombo, U. (1967). Fundamental aspects of petroleum geochemistry. Elsevier.

Chicago Style (17th ed.) Citation

Nagy, Bartholomew, and Umberto Colombo. Fundamental Aspects of Petroleum Geochemistry. Amsterdam, London [etc.], Barking (Ex.): Elsevier, 1967.

MLA (9th ed.) Citation

Nagy, Bartholomew, and Umberto Colombo. Fundamental Aspects of Petroleum Geochemistry. Elsevier, 1967.