Dent, D., & Young, A. (1981). Soil survey and land evaluation. George Alber and Unwin.
Cita Chicago Style (17a ed.)Dent, David, y Anthony Young. Soil Survey and Land Evaluation. London: George Alber and Unwin, 1981.
Cita MLA (9a ed.)Dent, David, y Anthony Young. Soil Survey and Land Evaluation. George Alber and Unwin, 1981.
Precaución: Estas citas no son 100% exactas.