Kanko, T., G. Shibru, F. G/meskel, E. Girma, B. Boda, and B. Tsegaye. “Assessment of Respiratory Symptoms and Lung Function Among Workers Exposed to Cotton Dust at Arba Minch Textile Factory, Arba Minch, Southern Ethiopia, 2017”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 35, no. 3, Sept. 2017, pp. 380-92, https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/7926.