World Register of Marine Species (WoRMS)
WoRMS (2026). Thyonidium productum (Ayres, 1852). Accessed at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=529704 on 2026-08-29
Ayres, WO., 1852. Descriptions of Holothurians. Proceedings Boston Society of Natural History. 4: 207-208, 214-215, 243-247