Pseudaspidosiphon

Baird, W. (1868). Monograph on the species of worms belonging to the subclass Gephyrea; with a notice of such species as are contained in the collection of the British Museum. <em>Proceedings of the Zoological Society of London.</em> 1868: 76–114.

Cutler, E.B. (1994). The Sipuncula, their systematics, biology, and evolution. Cornell University Press 512 East State St., Ithaca, NY 14850, USA. ISBN #0-8014-2843-2.

van der Land, J. (ed). (2008). UNESCO-IOC Register of Marine Organisms (URMO).