Kokobe Seyoum Alemu. “Contribution of Khat Kellas and the Impacts of Its Closure to Ethiopian Economy (The Case of Hararghe Khat Kella)”. Global Journal of Management and Business Research 15, no. D2 (May 15, 2015): 21–29. Accessed May 17, 2024. https://journalofbusiness.org/index.php/GJMBR/article/view/1681.