International Conference on Environmental Problems Associated with Nitrogen Fertilisation of Field Grown Vegetable Crops Potsdam. (2001). Proceedings of the International Conference on Environmental Problems Associated with Nitrogen Fertilisation of Field Grown Vegetable Crops: Potsdam, Germany, 30 August - 1 September, 1999. ISHS.
Chicago-Zitierstil (17. Ausg.)International Conference on Environmental Problems Associated with Nitrogen Fertilisation of Field Grown Vegetable Crops Potsdam. Proceedings of the International Conference on Environmental Problems Associated with Nitrogen Fertilisation of Field Grown Vegetable Crops: Potsdam, Germany, 30 August - 1 September, 1999. Leuven: ISHS, 2001.
MLA-Zitierstil (9. Ausg.)International Conference on Environmental Problems Associated with Nitrogen Fertilisation of Field Grown Vegetable Crops Potsdam. Proceedings of the International Conference on Environmental Problems Associated with Nitrogen Fertilisation of Field Grown Vegetable Crops: Potsdam, Germany, 30 August - 1 September, 1999. ISHS, 2001.