Não informado. (1971). Seed Pathology News. Danish Government Institute of Seed Pathology for Developing Countries.
Chicago-Zitierstil (17. Ausg.)Não informado. Seed Pathology News. Copenhagen: Danish Government Institute of Seed Pathology for Developing Countries, 1971.
MLA-Zitierstil (8. Ausg.)Não informado. Seed Pathology News. Danish Government Institute of Seed Pathology for Developing Countries, 1971.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.