Unionicola crassipes (Muller, 1776)
| Observations on the Micro-Fauna of an Oregon Pond Elda R Walker (1908) Transactions of The American Microscopical Society 28: 75-84 | |
| Hydracarinen aus dem Kaplande. Gesammelt von der Deut-schen Sudpolar-Expedition (1914) Zoologische Jahrbuecher Jena Abteilungen F Systematik 37: 329-350 | |
| Check list of North American water-mites Rodger David Mitchell (1954) Fieldiana Zoology 35(3): 29-70 |