Programme for Development Cooperation. (1981). Handbook on the procurement and distribution of fertilizers. Programme for Development Cooperation.
Chicago-Zitierstil (17. Ausg.)Programme for Development Cooperation. Handbook on the Procurement and Distribution of Fertilizers. Finland: Programme for Development Cooperation, 1981.
MLA-Zitierstil (9. Ausg.)Programme for Development Cooperation. Handbook on the Procurement and Distribution of Fertilizers. Programme for Development Cooperation, 1981.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.