The following bibliography has been generated by bringing together all references provided by our content partners. There may be duplication.
- Den Hartog C. 1968. An analysis of the Gnathorhynchidae (Neorhabdocoela, Turbellaria) and the position of Psittacorhynchus verweyi nov.gen., nov.sp. in this family Koninklijke Nederlandse Akademie van Wetenschappen Proceedings, Series C 71: 335-345
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