Cita APA

Webster, R., & Webster, R. (1979). Quantitative and numerical methods in soil classification and survey. Oxford: Clarendon Press.

Citación estilo Chicago

Webster, R., y R. Webster. Quantitative and Numerical Methods in Soil Classification and Survey. Oxford: Clarendon Press, 1979.

Cita MLA

Webster, R., y R. Webster. Quantitative and Numerical Methods in Soil Classification and Survey. Oxford: Clarendon Press, 1979.