APA (7th ed.) Citation

Foth, H., Jacobs, H. S., & Boyer, R. E. (1971). Field guide to soils. Houghton Mifflin.

Chicago Style (17th ed.) Citation

Foth, Henry, Hyde S. Jacobs, and Robert E. Boyer. Field Guide to Soils. Boston: Houghton Mifflin, 1971.

MLA (9th ed.) Citation

Foth, Henry, et al. Field Guide to Soils. Houghton Mifflin, 1971.