Delprete, P.G. 2015.

Revision of Neobertiera (Rubiaceae, Sipaneeae) with observations on distyly, and three new species from the Guianas

. Phytotaxa. 206, 1 (May 2015), 118–132. DOI:https://doi.org/10.11646/phytotaxa.206.1.13.