Literature
- Knight-Jones, E.W. & J.S. Ryland 1990. Priapulida, Sipuncula, Echiura, Pogonophora, and Entoprocta. In: The Marine Fauna of the British Isles and North-West Europe. (ed. P.J. Hayward & J.S. Ryland). Clarendon Press, Oxford.
- Webb, M. 1963b. A reproductive function of the tentacle in the male of Siboglinum ekmani Jägersten (Pogonophora). Sarsia, 13: 45-49.
- Webb, M. 1964b. A redescription of Siboglinum ekmani Jägersten (Pogonophora). Sarsia, 15: 37-48.