Cita APA (7a ed.)

Clarke, G. R., & Beckett, P. (1971). The study of soil in the field (5th ed.). Clarendon Press.

Cita Chicago Style (17a ed.)

Clarke, G. R., y Philip Beckett. The Study of Soil in the Field. 5th ed. Oxford: Clarendon Press, 1971.

Cita MLA (9a ed.)

Clarke, G. R., y Philip Beckett. The Study of Soil in the Field. 5th ed. Clarendon Press, 1971.