World Register of Marine Species (WoRMS)
McFadden, C.S.; Cordeiro, R.; Samimi-Namin, K.; Hoeksema, B.W., Williams, G.; van Ofwegen, L.P. (2026). World List of Octocorallia. Helicogorgia capensis (Simpson, 1910). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=520690 on 2026-08-03
Simpson, J.J. (1910). XIV. Hicksonella, a new gorgonellid genus. Journal of the Royal Microscopical Society. 1910: 681-692.