Ahmed, Shazia, Matthew King, Timothy W. Morrish, Ewelina Zaszewska, and Kathy Pichora-Fuller. “A Survey of the Use of Portable Audio Devices by University Students”. Canadian Acoustics 34, no. 3 (September 1, 2006): 64–65. Accessed March 29, 2024. https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1824.