Williams, H.H. (1968)
The taxonomy, ecology and host-specificity of some Phyllobothriidae (Cestoda: Tetraphyllidea), a critical revision of Phyllobothrium Beneden, 1949 and comments on some allied genera. Philosophical Transactions of the Royal Society of London 253(786), 231–307
Campbell, R.A. & Carvajal, J. (1979)
Synonymy of the phyllobothriid genera Rhodobothrium Linton, 1889, Inermiphyllidium Riser, 1955, and Sphaerobothrium Euzet, 1959 (Cestoda: Tetraphyllidea). Proceedings of the Helminthological Society of Washington, 46, 88–97