APA aipamena

United Nations Economic Commission for Europe. (1983). Efficient use of fertilizers in agriculture. New York: The United Nations.

Chicago Style aipamena

United Nations Economic Commission for Europe. Efficient Use of Fertilizers in Agriculture. New York: The United Nations, 1983.

MLA aipamena

United Nations Economic Commission for Europe. Efficient Use of Fertilizers in Agriculture. New York: The United Nations, 1983.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.