Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

Nagy, B., i Umberto Colombo. Fundamental Aspects of Petroleum Geochemistry. Amsterdam: Elsevier, 1967.

Cita MLA (8th ed.)

Nagy, B., i Umberto Colombo. Fundamental Aspects of Petroleum Geochemistry. Elsevier, 1967.