B. Yitbarek, M., and W. Atalel. 2013. “Constraints and Opportunities of Village Chicken Production in Debsan Tikara Keble at Gonder Zuria Woreda, North Gonder, Ethiopia”. Scientific Journal of Veterinary Advances 2 (8):118-24. http://sjournals.com/index.php/sjva/article/view/1460.