Jones, T.R. (1889a) On some Palaeozoic Ostracoda from Pennsylvania, USA. American Geologist 4, 337–342.[details]
Brandão, S. N.; Antonietto, L. S.; Pereira, J. S.; Pereira, S. G. G.; Sá, H. A. B.; Praxedes, R. A.; Sabater, L. M., Santos, S.G.; Karanovic, I. (2025). World Ostracoda Database. Bollia ungula Jones, 1889 †. Accessed through: Marine Species Traits editorial board (2025) Marine Species Traits at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=776191 on 2025-05-23
Marine Species Traits editorial board (2025). Marine Species Traits. Bollia ungula Jones, 1889 †. Accessed at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=776191 on 2025-05-23