Template:Tosh et al., 2009
- Tosh, J., Davis, A.P., Dessein, S., De Block, P., Huysmans, S., Fay, M.F., Smets, E. & Robbrecht, E. 2009. Phylogeny of Tricalysia (Rubiaceae) and its relationships with allied genera based on plastid DNA data: Resurrection of the genus Empogona. Annals of the Missouri Botanical Garden 96(1): 194–213. JSTOR
. BHL.
