MORGAN, R. (1981). Soil conservation: Problems and prospects. Wiley.
Citación estilo ChicagoMORGAN, R.P.C. Soil Conservation: Problems and Prospects. New York: Wiley, 1981.
Cita MLAMORGAN, R.P.C. Soil Conservation: Problems and Prospects. Wiley, 1981.
Warning: These citations may not always be 100% accurate.