World Register of Marine Species (WoRMS)
Shenkar, N.; Gittenberger, A.; Lambert, G.; Rius, M.; Moreira da Rocha, R.; Swalla, B.J.; Turon, X. (2026). Ascidiacea World Database. Molgula occidentalis Traustedt, 1883. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=103790 on 2026-08-29
Traustedt, M. P. A. (1883). Vestindiske Ascidiae Simplices, Anden Afdeling. Molgulidae og Cynthiadae. Vid. Meddel. Nat. For. Kjobenhavn, ann.1882. 108-136.