Template:Delprete et al., 1999
- Delprete, P., Andersson, L., Ståhl, B. & Taylor, C.M. 1999. Flora of Ecuador, Vol. 62. Rubiaceae (part 3). 320 pp. Department of Systematic Botany, University of Göteborg, Section for Botany, Riksmuseum. Google Books. Gooble Books (another version).
