Forgey, Staci. "9 major animal phyla". OER Commons. Institute for the Study of Knowledge Management in Education, 16 Nov. 2018. Web. 27 Dec. 2024. <https://oercommons.org/authoring/49819-9-major-animal-phyla>.
Forgey, S. (2018, November 16). 9 major animal phyla. OER Commons. Retrieved December 27, 2024, from https://oercommons.org/authoring/49819-9-major-animal-phyla.