OLSON, G. W. (1981). Soils and the environment: Aguide to soil surveys andtheir applications. Champman and Hall.
Chicago (17e ed.) BronvermeldingOLSON, Gerald W. Soils and the Environment: Aguide to Soil Surveys Andtheir Applications. New York: Champman and Hall, 1981.
MLA (9e ed.) BronvermeldingOLSON, Gerald W. Soils and the Environment: Aguide to Soil Surveys Andtheir Applications. Champman and Hall, 1981.
Let op: Deze citaties zijn niet altijd 100% accuraat.