1. Seif, A.A. and Whittle, A.M. (1984) Diseases of Citrus in Kenya. FAO Plant Protection Bulletin, 32, 122-127.
2. Kuate, J. (1998) Citrus Fruit and Leaf Spot Disease Caused by Phaeoramularia angolensis. Cahiers Agricultures, 7, 121-129.
3. Diseases of citrus.
4. Chung, K.R. and Timmer, L.W. (2009) Citrus Diseases Exotic to Florida: Phaeoramularia Fruit and Leaf Spot (PFLS) Fact Sheet PP-234. University of Florida, Gainesville.
5. Yimenu, J. (1993) Preliminary Survey Report on Leaf Spot Disease of Citrus in Sidamo. Coffee Development Authority, Addis Ababa.