Ivera, G., S. Kimera, E. Karimuribo, A. Ngata, and A. Kayumba. “Prevalence of Noise Induced Hearing Loss in Textile Industries in Morogoro and Dar Es Salaam”. IMTU Medical Journal, vol. 4, no. 1, May 2013, pp. 26-32, https://www.ajol.info/index.php/imj/article/view/89213.