R. Mitchell and P. Meggison, “Delta Pi Epsilon Milestones: A Retrospection of 75 Years”, JRBE, vol. 53, no. 2, pp. 60–65, Jun. 2023, Accessed: Apr. 21, 2026. [Online]. Available: https://jrbe.nbea.org/index.php/jrbe/article/view/89