Kebede, M., and B. Bellachew. “Phenotypic Diversity in the Hararge Coffee (<i>Coffea arabica</I> L) Germplasm for Quantitative Traits”. East African Journal of Sciences, vol. 2, no. 1, Mar. 2008, pp. 13-18, doi:10.4314/eajsci.v2i1.40358.