Template:Hedberg et al., 2006
- Hedberg, K.O., Kelbessa, E., Edwards, S., Demissew, S. & Persson, E. (eds.) 2006. Flora of Ethiopia and Eritrea. 5. Gentianaceae to Cyclocheilaceae. liv + 690 pp.. The National Herbarium, Addis Ababa University, Ethiopia & The Department of Systematic Botany, Uppsala. ISBN 91-971285-6-2