World Register of Marine Species (WoRMS)
Villanova biternata (A.Gray) Wooton & Standl.
Compositae Working Group (CWG) (2026). Global Compositae Database. Villanova biternata (A.Gray) Wooton & Standl.. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1127369 on 2026-08-29
Gray, A. (1852). Plantae Wrightianae Texano-Neo-Mexicanae. Smithsonian Contr. Knowl. 3(5): 1-146.