Gerald W Olson. (1981). Soils and the environment: A guide to soil surveys and their applications. New York: Chapman and Hall.
Citação norma ChicagoGerald W Olson. Soils and the Environment: A Guide to Soil Surveys and Their Applications. New York: Chapman and Hall, 1981.
Citação norma MLAGerald W Olson. Soils and the Environment: A Guide to Soil Surveys and Their Applications. New York: Chapman and Hall, 1981.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.