Azodo, Adinife Patrick, and Idama Omokaro. “Assessment of preferred maximum sound output intensity of personal audio devices on a recommended safety exposure time scale”. Science, Engineering and Health Studies 13, no. 2 (July 12, 2019): 93–100. accessed October 9, 2026. https://li01.tci-thaijo.org/index.php/sehs/article/view/129989.