MolluscaBase eds. (2025). MolluscaBase. Clausilia (Andraea) dubia otvinensis H. von Gallenstein, 1895. Accessed through: Marine Species Traits editorial board (2025) Marine Species Traits at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=1003797 on 2025-05-13
Marine Species Traits editorial board (2025). Marine Species Traits. Clausilia (Andraea) dubia otvinensis H. von Gallenstein, 1895. Accessed at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=1003797 on 2025-05-13