APA (7th ed.) Citation

International Geochemical Exploration Symposium, Wilding, I., & Butt, C. R. M. Geochemical exploration 1976.

Chicago Style (17th ed.) Citation

International Geochemical Exploration Symposium, I. Wilding, and C. R. M. Butt. Geochemical Exploration 1976.

MLA (9th ed.) Citation

International Geochemical Exploration Symposium, et al. Geochemical Exploration 1976.