Friele H. (1877). Preliminary report on the Mollusca from the Norwegian North Atlantic Expedition in 1876. <i>Nyt Magazin for Naturvidenskaberne,</i> 23: 1-10, 1 pl., available online athttp://biodiversitylibrary.org/page/36104920[details]
MolluscaBase eds. (2021). MolluscaBase. Pleurotoma (Bela) ovalis Friele, 1877. Accessed through: Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2021) European Register of Marine Species at: http://marbef.org/data/aphia.php?p=taxdetails&id=436615 on 2025-01-05
Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2025). European Register of Marine Species. Pleurotoma (Bela) ovalis Friele, 1877. Accessed at: https://vliz.be/vmdcdata/narms/narms.php?p=taxdetails&id=436615 on 2025-01-05
original descriptionFriele H. (1877). Preliminary report on the Mollusca from the Norwegian North Atlantic Expedition in 1876. <i>Nyt Magazin for Naturvidenskaberne,</i> 23: 1-10, 1 pl., available online athttp://biodiversitylibrary.org/page/36104920[details]