V. Aksakal, S. Haşimoğlu, B. Bayram, Y. Erdoğan, H. Ürüşan Altun, and M. M. Cengiz, “Sustainability Organic Agriculture and Livestock Production with Respect to European Union in Eastern Anatolia and East Black Sea Regions”, Turkish JAF Sci.Tech., vol. 4, no. 11, pp. 1024–1030, Nov. 2016.