APA (7th ed.) Citation

Hill, C. A., & Forti, P. (1986). Cave minerals of the world. National Speleological Society.

Chicago Style (17th ed.) Citation

Hill, Carol A., and P. Forti. Cave Minerals of the World. Huntsville, Alabama: National Speleological Society, 1986.

MLA (9th ed.) Citation

Hill, Carol A., and P. Forti. Cave Minerals of the World. National Speleological Society, 1986.