The following bibliography has been generated by bringing together all references provided by our content partners. There may be duplication.
- Flora of China Editorial Committee. 2003. Fl. China 5: 1–506. Science Press & Missouri Botanical Garden Press, Beijing & St. Louis. http://www.tropicos.org/Reference/1024907
- Lorence, D. H. 1999. A nomenclator of Mexican and Central American Rubiaceae. Monogr. Syst. Bot. Missouri Bot. Gard. 73: 1–177. http://www.tropicos.org/Reference/1012389
- Nasir, E. & S. I. Ali (eds). 1980-2005. Fl. Pakistan Univ. of Karachi, Karachi. http://www.tropicos.org/Reference/1031050
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