Mańko, M. K., and P. R. Pugh. “Agalma clausi (Bedot, 1888) (Siphonophora: Physonectae)—complementary Description With Notes on Species Distribution and Ecology”. Zootaxa, vol. 4441, no. 2, June 2018, pp. 311–331, doi:10.11646/zootaxa.4441.2.7.