Ritter, W. E.; Forsyth, R. H. (1917). Ascidian of the littoral zone of southern California. <em>Univ. California Publ., Zool.</em> 16: 439-512.[details]
Shenkar, N.; Gittenberger, A.; Lambert, G.; Rius, M.; Moreira da Rocha, R.; Swalla, B.J.; Turon, X. (2025). Ascidiacea World Database. Molgula verrucifera Ritter & Forsyth, 1917. Accessed through: Marine Species Traits editorial board (2025) Marine Species Traits at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=250932 on 2025-05-06
Marine Species Traits editorial board (2025). Marine Species Traits. Molgula verrucifera Ritter & Forsyth, 1917. Accessed at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=250932 on 2025-05-06
original descriptionRitter, W. E.; Forsyth, R. H. (1917). Ascidian of the littoral zone of southern California. <em>Univ. California Publ., Zool.</em> 16: 439-512.[details]