Roos, P., Gorka, M., & Karreis, G. (2009). Wiederfund der Dickschaligen Kugelmuschel Sphaerium solidum (Normand, 1844) in Bayern (Bivalvia: Shaeriidae): = Rediscovery of the Witham orb mussel Sphaerium solidum (Normand, 1844) in Bavaria/Germany (Bivalvia: Shaeriidae).
Chicago-Zitierstil (17. Ausg.)Roos, Peter, Matthias Gorka, und Gerd Karreis. Wiederfund Der Dickschaligen Kugelmuschel Sphaerium Solidum (Normand, 1844) in Bayern (Bivalvia: Shaeriidae): = Rediscovery of the Witham Orb Mussel Sphaerium Solidum (Normand, 1844) in Bavaria/Germany (Bivalvia: Shaeriidae). 2009.
MLA-Zitierstil (9. Ausg.)Roos, Peter, et al. Wiederfund Der Dickschaligen Kugelmuschel Sphaerium Solidum (Normand, 1844) in Bayern (Bivalvia: Shaeriidae): = Rediscovery of the Witham Orb Mussel Sphaerium Solidum (Normand, 1844) in Bavaria/Germany (Bivalvia: Shaeriidae). 2009.