Macrobenthos of the North Sea - Tunicata: Hemichordata and Urochordata. In: P.J. Hayward & J.S. Ryland (eds), The Marine Fauna of the British Isles and North-West Europe, vol. 2 Molluscs to chordates, Clarendon Press, Oxford: 872-904.

Literature

Authors(s)	Knight-Jones, E.W. & J.S. Ryland
Year	1990
Title	Hemichordata and Urochordata. In: P.J. Hayward & J.S. Ryland (eds), The Marine Fauna of the British Isles and North-West Europe, vol. 2 Molluscs to chordates, Clarendon Press, Oxford: 872-904.