1. Ayalew, W., Dorland, A. van and Rowlands, J. (eds), 2004. Design, Execution and Analysis of the Livestock Breed Survey in Oromiya Regional State, Ethiopia. Nairobi, Kenya: ILRI.
2. Budisatria, I.G.S., 2006. Dynamics of Small Ruminant Development in Central Java-Indonesia. PhD Thesis. Animal Production Systems Group. Wageningen University, with references- with summary in English, Dutch, and Bahasa Indonesia. 144p.
3. Central Statistical Authority (CSA), 2005. Ethiopian Statistical Abstract. Addis Ababa, Ethiopia.
4. Dereje, T., 2011. Community-based characterization of Hararghe highland goats in Darolabu district Western Hararghe, Ethiopia. An MSc Thesis presented to the school of graduate study of Jimma University, college of agriculture and Veterinary medicine. 172pp.
5. Duguma, G., Mirkena, T., Haile, A., Iñiguez, L., Okeyo, A.M., Tibbo, M., Rischkowsky, B., Sölkner, J. and Wurzinger, M., 2010. Participatory approaches to investigate breeding objectives of livestock keepers. Livestock Research for Rural Development, 22 Article #64. Retrieved August 12, 2014, from http://www.lrrd.org/lrrd22/4/dugu22064.htm .