Cita APA (7a ed.)

Buol, S., Hola, F. D., & MacCracken, R. (1973). Soil genesis and classification ([1st ed.].). Iowa State University Press.

Cita Chicago Style (17a ed.)

Buol, S.W, Francis Doan Hola, y R.J MacCracken. Soil Genesis and Classification. [1st ed.]. Ames: Iowa State University Press, 1973.

Cita MLA (9a ed.)

Buol, S.W, et al. Soil Genesis and Classification. [1st ed.]. Iowa State University Press, 1973.