World Register of Marine Species (WoRMS)
MolluscaBase eds. (2026). MolluscaBase. Pleurobranchus sordidus Forbes, 1844. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1522337 on 2026-08-30
Forbes E. (1844). Report on the Mollusca and Radiata of the Aegean sea, and on their distribution, considered as bearing on geology. Reports of the British Association for the Advancement of Science for 1843. 130-193.