Hooper, J.N.A.; Van Soest, R.W.M. (Eds.). (2002). Systema Porifera: a guide to the classification of Sponges. Kluwer Academic/ Plenum Publishers: New York, Boston, Dordrecht, London, Moscow. 2 Volumes. 1706 pp. ISBN 0-306-47260-0. (look up in IMIS) [details]