APA (7th ed.) Zitazioa

National Research Council (U.S.). Board on Agriculture. Committee on Conservation Needs and Opportunities. (1986). Soil conservation: Assessing the national resources inventory. National Academy Press.

Chicago Style (17th ed.) Zitazioa

National Research Council (U.S.). Board on Agriculture. Committee on Conservation Needs and Opportunities. Soil Conservation: Assessing the National Resources Inventory. Washington, D.C.: National Academy Press, 1986.

MLA (9th ed.) Zitazioa

National Research Council (U.S.). Board on Agriculture. Committee on Conservation Needs and Opportunities. Soil Conservation: Assessing the National Resources Inventory. National Academy Press, 1986.