Παραπομπή σε μορφή APA (7η εκδ.)

OLSON, G. W. (1981). Soils and the environment: Aguide to soil surveys andtheir applications. Champman and Hall.

Παραπομπή σε μορφή Chicago (17η εκδ.)

OLSON, Gerald W. Soils and the Environment: Aguide to Soil Surveys Andtheir Applications. New York: Champman and Hall, 1981.

Παραπομπή σε μορφή MLA (9th εκδ.)

OLSON, Gerald W. Soils and the Environment: Aguide to Soil Surveys Andtheir Applications. Champman and Hall, 1981.