@inbook{Porifera:SourceID:8250, author = {Sollas, W.J.}, journal = {In: Black, A. and C. (Eds), Encyclopaedia Britannica, 9th edition. 22. (Edinburgh).}, pages = {412-429}, title = { Sponges.}, url = {https://marinespecies.org/porifera/porifera.php?p=sourcedetails&id=8250}, year = {1887} }