MolluscaBase eds. (2024). MolluscaBase. Happia (Systrophiella) H. B. Baker, 1925. Accessed through: Marine Species Traits editorial board (2024) Marine Species Traits at: https://marinespecies.org/traits/aphia.php?p=taxdetails&id=997926 on 2024-07-14
Marine Species Traits editorial board (2024). Marine Species Traits. Happia (Systrophiella) H. B. Baker, 1925. Accessed at: https://marinespecies.org/traits/aphia.php?p=taxdetails&id=997926 on 2024-07-14