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R├╝tzler, K. (2002). Family Spirastrellidae Ridley & Dendy, 1886. Pp. 220-223. In: Hooper, J.N.A.; Van Soest, R.W.M. (eds) Systema Porifera. A guide to the classification of sponges. 2 volumes. Kluwer Academic/ Plenum Publishers, New York, 1708 + xvliii. ISBN 0-306-47260-0 (printed version).