Ryland, John S., Hans de Blauwe, Richard Lord, and Joshua A. Mackie. “Recent Discoveries of Alien Watersipora (Bryozoa) in Western Europe, With Redescriptions of Species”. Zootaxa 2093, no. 1 (May 6, 2009): 43–59. Accessed April 20, 2025. https://mapress.com/zt/article/view/zootaxa.2093.1.3.