walters, kolin. "First World War Site". OER Commons. Institute for the Study of Knowledge Management in Education, 08 Jan. 2019. Web. 04 Jul. 2024. <https://resourcebank.ca/authoring/1702-first-world-war-site>.
walters, k. (2019, January 08). First World War Site. OER Commons. Retrieved July 04, 2024, from https://resourcebank.ca/authoring/1702-first-world-war-site.