Warren L. Wagner, David H. Lorence: Revision of Coprosma (Rubiaceae, tribe Anthospermeae) in the Marquesas Islands. In: PhytoKeys. Nr.4, 2011, ISSN1314-2003, S.109–124, doi:10.3897/phytokeys.4.1600.
tropicos.org
Coprosma esulcata bei Tropicos.org. Missouri Botanical Garden, St. Louis, abgerufen am 8. November 2016.
zdb-katalog.de
Warren L. Wagner, David H. Lorence: Revision of Coprosma (Rubiaceae, tribe Anthospermeae) in the Marquesas Islands. In: PhytoKeys. Nr.4, 2011, ISSN1314-2003, S.109–124, doi:10.3897/phytokeys.4.1600.