1Griffiths J F. Ethiopian Highlands. In: Landsberg H E. World Survey of Climatology, Vol 10: Climates of Africa[M]. Elsevier Publishing Company,1972.369-388.
2Natural Resources Management and Regulatory Department of MOA. Agro-ecological zones of Ethiopia[M]. Addis Ababa: Ministry of Agriculture, Ethiopia, 2000.1-122.
3Kosichi J, Solomon Bellete. Notes on coffee production and costs in Ethiopia[M]. Addis Ababa: Institute of Agricultural Research, 1972.4-24.
4Ethiopian Authority for Standardization. Ethiopian Sstandrds-Vol.3 COFFEE[M]. Addis Ababa: Ethiopian Authority for Standardiza-tion, 1990.62-83.
5Yetta Bellachew, Behailu Atero, Gibramu Temesgen. Description and Production Recommendation for New Cultivars of Arabica Coffee[M]. Addis Abeba: Institute of Agricultural Research, 1998. 2-6.
6International Agricultural Training Programme. Ethiopia coffee handbook[M]. Addis Ababa: Coffee and Tea Authority, 1995.1.