Witenberg, G. G. (1923). The trematodes of the family Cyclocoeliidae and a new principle of their systematics. Trudy Gosudarstv. Inst. Eksper. Vet.,. 1 (1): 84–141.
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Witenberg, G. G.
1923
The trematodes of the family Cyclocoeliidae and a new principle of their systematics