PRICE, E.W. (1938)
North American monogenetic trematodes. II. The families Monocotylidae, Microbothriidae, Acanthocotylidae and Udonellidae (Capsaloidea) Journal of the Washington Academy of Sciences, 28: 109–126, 183–198
DEETS, G.B. (1994)
Copepod-Chondrichthyan coevolution: A cladistic consideration. Ph.D thesis, University of British Columbia.