Template:Davis et al., 2011
- Davis, A.P., Tosh, J., Ruch, N. & Fay, M.F. 2011. Growing coffee: Psilanthus (Rubiaceae) subsumed on the basis of molecular and morphological data; implications for the size, morphology, distribution and evolutionary history of Coffea. Botanical Journal of the Linnean Society 167(4): 357-377. DOI: 10.1111/j.1095-8339.2011.01177.x