Leahey, Sarah. "How Much? (CK-12 Remix)". OER Commons. Institute for the Study of Knowledge Management in Education, 09 Dec. 2019. Web. 07 Nov. 2024. <https://goopenva.org/authoring/484-how-much-ck-12-remix>.
Leahey, S. (2019, December 09). How Much? (CK-12 Remix). OER Commons. Retrieved November 07, 2024, from https://goopenva.org/authoring/484-how-much-ck-12-remix.