(of)Clapp, W.F. (1923). Some Mollusca from the Solomon Islands. Bulletin of the Museum of Comparative Zoology, 65 (11): 351-418, 5 pls., available online athttps://www.biodiversitylibrary.org/page/4774146 page(s): 360, pl. 2, figs 7-9 [details]
MolluscaBase eds. (2025). MolluscaBase. Orpiella sororum (Clapp, 1923). Accessed through: Marine Species Traits editorial board (2025) Marine Species Traits at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=1343493 on 2025-05-11
Marine Species Traits editorial board (2025). Marine Species Traits. Orpiella sororum (Clapp, 1923). Accessed at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=1343493 on 2025-05-11
original description(of)Clapp, W.F. (1923). Some Mollusca from the Solomon Islands. Bulletin of the Museum of Comparative Zoology, 65 (11): 351-418, 5 pls., available online athttps://www.biodiversitylibrary.org/page/4774146 page(s): 360, pl. 2, figs 7-9 [details]