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Vacelet, J.; Borojevic, R.; Boury-Esnault, N.; Manuel, M. (2002). Order Lithonida Vacelet, 1981, Recent. Pp. 1185-1192. 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 + xlviii. ISBN 0-36-47260-0 (printed version).