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Van Soest, R.W.M. (2002). Family Crellidae Dendy, 1922. Pp. 556-566. In: Hooper, J.N.A. & Van Soest, R.W.M. (eds) Systema Porifera. A guide to the classification of sponges. 1 (Kluwer Academic/ Plenum Publishers: New York, Boston, Dordrecht, London, Moscow).