(en) Brecht Verstraete, Olivier Lachenaud, Erik Smets, Steven Dessein, Bonaventure Sonké, « Taxonomy and phylogenetics of Cuviera (Rubiaceae–Vanguerieae) and reinstatement of Globulostylis with the description of three new species », in Botanical Journal of the Linnean Society, Volume 173, Issue 3, 1 November 2013, p. 407-441, [lire en ligne]
