OLSON, G. W. (1981). Soils and the environment: Aguide to soil surveys andtheir applications. Champman and Hall.
Chicago Style (17. basım) AtıfOLSON, Gerald W. Soils and the Environment: Aguide to Soil Surveys Andtheir Applications. New York: Champman and Hall, 1981.
MLA (9th ed.) AtıfOLSON, Gerald W. Soils and the Environment: Aguide to Soil Surveys Andtheir Applications. Champman and Hall, 1981.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..