Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

Webster, Robert, y M.A Oliver. Statistical Methods in Soil and Land Resource Survey. Oxford [etc.]: Oxford University Press, 1990.

Cita MLA (9a ed.)

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