Philippi, R. A. (1836). Enumeratio molluscorum Siciliae cum viventium tum in tellure tertiaria fossilium quae in itinere suo observavit. Vol. 1. xiv + 267 p., pls. 1-12. Sumptibus Simonis Schroppii et Sociorum. Berolini [Berlin]. , available online athttps://www.biodiversitylibrary.org/page/46935803 page(s): 198, pl. 11 fig. 23 [details]
MolluscaBase eds. (2021). MolluscaBase. Pleurotoma gracile Philippi, 1836. Accessed through: Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2021) European Register of Marine Species at: http://www.marbef.org/data./aphia.php?p=taxdetails&id=749936 on 2024-04-19
Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2024). European Register of Marine Species. Pleurotoma gracile R. A. Philippi, 1836. Accessed at: https://vliz.be/vmdcdata/narms/narms.php?p=taxdetails&id=749936 on 2024-04-19
original descriptionPhilippi, R. A. (1836). Enumeratio molluscorum Siciliae cum viventium tum in tellure tertiaria fossilium quae in itinere suo observavit. Vol. 1. xiv + 267 p., pls. 1-12. Sumptibus Simonis Schroppii et Sociorum. Berolini [Berlin]. , available online athttps://www.biodiversitylibrary.org/page/46935803 page(s): 198, pl. 11 fig. 23 [details]
source of synonymyPhilippi, R. A. (1844). <i>Enumeratio molluscorum Siciliae cum viventium tum in tellure tertiaria fossilium, quae in itinere suo observavit. Vol. 2.</i>. Halle [Halis Saxorum]: Eduard Anton. iv + 303 pp., pls 13-28., available online athttps://www.biodiversitylibrary.org/page/46936062 page(s): 166 [details]