Literature
- Ackers, R.G., D. Moss, B.E. Picton and S.M.K. Stone 1985. Sponges of the British Isles ("Sponge IV"). I. Marine Conservation Soc., Ross on Wye, U.K.: 1-107.
- Ackers, R.G.A., D. Moss and B.E. Picton 1992. Sponges of the British Isles ("Sponge V"), a colour guide and working document. Marine Conservation Society, 175 pp.
- Brøndsted, H.V. 1932. Marine Spongia. The Zoology of the Faroes, 1 (1, III): 1-34.
- Burton, M. 1963. A revision of the classification of the calcareous sponges. British Museum (Natural History), London. 693 pp.
- Schmidt, O. 1869. Vorläufige Mittheilungen über die Spongien der Grönlandischen Küste. Mitt. Steiermärk. Gew. Ver., 2 (1): 89-97.