United Nations Economic Commission for Europe. (1983). Efficient use of fertilizers in agriculture. New York: The United Nations.
Trích dẫn kiểu ChicagoUnited Nations Economic Commission for Europe. Efficient Use of Fertilizers in Agriculture. New York: The United Nations, 1983.
ציטוט MLAUnited Nations Economic Commission for Europe. Efficient Use of Fertilizers in Agriculture. New York: The United Nations, 1983.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.