The World Bank / FAO / UNIDO / Industry / Fertilizer Working Group. (1993). World and regional supply and demand balances for nitrogen, phosphate, and potash, 1991/92-1997. The World Bank.
Chicago-Zitierstil (17. Ausg.)The World Bank / FAO / UNIDO / Industry / Fertilizer Working Group. World and Regional Supply and Demand Balances for Nitrogen, Phosphate, and Potash, 1991/92-1997. Washington, D.C: The World Bank, 1993.
MLA-Zitierstil (9. Ausg.)The World Bank / FAO / UNIDO / Industry / Fertilizer Working Group. World and Regional Supply and Demand Balances for Nitrogen, Phosphate, and Potash, 1991/92-1997. The World Bank, 1993.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.