@inbook{AfReMaS:SourceID:404600, author = {Reiswig, H.M.}, title = {Class Hexactinellida Schmidt, 1870. pp 1201-1210. In: Hooper, J.N.A. & van Soest, R.W.M. (2002 [2004]). Systema Porifera. A guide to the classification of sponges (2 volumes). Kluwer Academic/Plenum, NY. 1708 + XLVIII. ISBN 978-1-4615-0747-5 (eBook electronic version).}, url = {https://marinespecies.org/afremas/aphia.php?p=sourcedetails&id=404600}, year = {2002 [2004]} }