Cita APA (7a ed.)

Webster, R., & Oliver, M. (1990). Statistical methods in soil and land resource survey. Oxford.

Cita Chicago Style (17a ed.)

Webster, R., y M.A Oliver. Statistical Methods in Soil and Land Resource Survey. Nueva York: Oxford, 1990.

Cita MLA (8a ed.)

Webster, R., y M.A Oliver. Statistical Methods in Soil and Land Resource Survey. Oxford, 1990.