Rawling , William. “When The Simplest Thing Is Difficult: Manufacturing Depth Charges in Canada, 1933-1945”. The Northern Mariner / Le marin du nord 13, no. 2 (April 1, 2003): 1–23. Accessed November 24, 2024. https://tnm.journals.yorku.ca/index.php/default/article/view/554.