Alem, A., D. Kebede, G. Mitike, F. Enqusellasie, and W. Lemma. “Unprotected Sex, Sexually Transmitted Infections and Problem Drinking Among Female Sex Workers in Ethiopi”. The Ethiopian Journal of Health Development, vol. 20, no. 2, Dec. 2016, https://ejhd.org/index.php/ejhd/article/view/597.