Merbach, W., & Deubel, A. (2007). The Long-Term Fertilization Trials in Halle (Saale), Germany: A Tool for Sustainable and Environmentally Compatible Land Management — Contributions of Plant Nutrition Science in Halle 13 (2nd revised Edition.). DUV.
Παραπομπή σε μορφή Chicago (17η εκδ.)Merbach, Wolfgang, και Annette Deubel. The Long-Term Fertilization Trials in Halle (Saale), Germany: A Tool for Sustainable and Environmentally Compatible Land Management — Contributions of Plant Nutrition Science in Halle 13. 2nd revised Edition. Wiesbaden: DUV, 2007.
Παραπομπή σε μορφή MLA (8th εκδ.)Merbach, Wolfgang, και Annette Deubel. The Long-Term Fertilization Trials in Halle (Saale), Germany: A Tool for Sustainable and Environmentally Compatible Land Management — Contributions of Plant Nutrition Science in Halle 13. 2nd revised Edition. DUV, 2007.
