1. FAO 2013 FAO STAT http://faostat.fao.org/site/573/DesktopDefault.aspx?PageID=573#ancor
2. Garuma , S. Lemecha , F. Sisay , A. Jemal , E. 2007 Study on gender distribution of ownership of animal drawn carts and its effect on women's life in Adami Tulu and Dugda Bora districts Draught Animal News
3. Gebreab , F. 1993 Use of Equines in Ethiopia Fourth National Livestock Improvement Conference, NLIC Proceedings 51 58
4. Animal traction and transport in the 21st century: getting the priorities right;Pritchard;Vet. J.,2010