APA (7th ed.) Citation

Buol, S. W. (1997). Soil genesis and classification (4th ed.). Iowa State University Press.

Chicago Style (17th ed.) Citation

Buol, S. W. Soil Genesis and Classification. 4th ed. Ames: Iowa State University Press, 1997.

MLA (9th ed.) Citation

Buol, S. W. Soil Genesis and Classification. 4th ed. Iowa State University Press, 1997.