APA (7th ed.) Zitazioa

Bennett, H. H. (1939). Soil conservation. McGraw-Hill.

Chicago Style (17th ed.) Zitazioa

Bennett, Hugh Hammond. Soil Conservation. New York: McGraw-Hill, 1939.

MLA (9th ed.) Zitazioa

Bennett, Hugh Hammond. Soil Conservation. McGraw-Hill, 1939.