(of)Nutting, C.C. (1909). Alcyonaria of the Californian coast. <em>Proceedings of the United States National Museum.</em> 35: 681-727, plates 84-91., available online athttps://www.biodiversitylibrary.org/page/7495540 page(s): 724 [details]
McFadden, C.S.; Cordeiro, R.; Samimi-Namin, K.; Williams, G.; van Ofwegen, L. (2025). World List of Octocorallia. Callistephanus kofoidi (Nutting, 1909). Accessed through: Glover, A.G.; Higgs, N.; Horton, T. (2025) World Register of Deep-Sea species (WoRDSS) at: https://marinespecies.org/deepsea/aphia.php?p=taxdetails&id=1608731 on 2026-08-07
Glover, A.G.; Higgs, N.; Horton, T. (2026). World Register of Deep-Sea species (WoRDSS). Callistephanus kofoidi (Nutting, 1909). Accessed at: https://www.marinespecies.org/Deepsea/aphia.php?p=taxdetails&id=1608731 on 2026-08-07
original description(of)Nutting, C.C. (1909). Alcyonaria of the Californian coast. <em>Proceedings of the United States National Museum.</em> 35: 681-727, plates 84-91., available online athttps://www.biodiversitylibrary.org/page/7495540 page(s): 724 [details]
new combination referenceMcFadden, C.S.; van Ofwegen, L.P.; Quattrini, A.M. (2022). Revisionary systematics of Octocorallia (Cnidaria: Anthozoa) guided by phylogenomics. <em>Bulletin of the Society of Systematic Biologists.</em> 1(3), 8735, pp. 1-79., available online athttps://ssbbulletin.org/index.php/bssb/article/view/8735 page(s): 59 [details]