Hetu, R., and H. Tran Quoc. “Can an Inactivated Hearing Aid Act As a Hearing Protector?”. Canadian Acoustics 20, no. 3 (September 1, 1992): 35–36. Accessed March 2, 2024. https://jcaa.caa-aca.ca/index.php/jcaa/article/view/725.