Cita APA (7th ed.)

Killops, S. D., & Killops, V. J. (1993). An introduction to organic geochemistry. Longman Scientific & Technical.

Cita Chicago (17th ed.)

Killops, S. D., i V. J. Killops. An Introduction to Organic Geochemistry. Harlow: Longman Scientific & Technical, 1993.

Cita MLA (9th ed.)

Killops, S. D., i V. J. Killops. An Introduction to Organic Geochemistry. Longman Scientific & Technical, 1993.