APA (7th ed.) Citation

Killops, S. D., & Killops, V. J. (1993). An introduction to organic geochemistry (1. publ.). Longman.

Chicago Style (17th ed.) Citation

Killops, Stephen D., and Vanessa J. Killops. An Introduction to Organic Geochemistry. 1. publ. Harlow, Essex, England: Longman, 1993.

MLA (9th ed.) Citation

Killops, Stephen D., and Vanessa J. Killops. An Introduction to Organic Geochemistry. 1. publ. Longman, 1993.