Xu, K.; Agatha, S.; Dolan, J. (2024). World Ciliophora Database. Undella subcaudata subsp. acuta (Jörgensen, 1924) Balech, 1975. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=428444 on 2024-07-05