Laurent, Eunice. "sponge anatomy". OER Commons. Institute for the Study of Knowledge Management in Education, 21 Dec. 2017. Web. 03 Sep. 2024. <https://oercommons.org/authoring/26359-sponge-anatomy>.
Laurent, E. (2017, December 21). sponge anatomy. OER Commons. Retrieved September 03, 2024, from https://oercommons.org/authoring/26359-sponge-anatomy.