Esala, M. (1991). Split application of nitrogen: Effects on the protein in spring wheat and fate of 15N-labelled nitrogen in the soil-plant system = Jaettu typpilannoitus. Agricultural Research Centre.
Chicago-Zitierstil (17. Ausg.)Esala, Martti. Split Application of Nitrogen: Effects on the Protein in Spring Wheat and Fate of 15N-labelled Nitrogen in the Soil-plant System = Jaettu Typpilannoitus. Helsinki: Agricultural Research Centre, 1991.
MLA-Zitierstil (9. Ausg.)Esala, Martti. Split Application of Nitrogen: Effects on the Protein in Spring Wheat and Fate of 15N-labelled Nitrogen in the Soil-plant System = Jaettu Typpilannoitus. Agricultural Research Centre, 1991.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.