World Register of Marine Species (WoRMS)
Guiry, M.D. & Guiry, G.M. (2026). AlgaeBase. World-wide electronic publication, National University of Ireland, Galway (taxonomic information republished from AlgaeBase with permission of M.D. Guiry). Ulva rigida C.Agardh, 1823. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=145990 on 2026-08-04
Agardh, C.A. (1823). Species algarum rite cognitae, cum synonymis, differentiis specificis et descriptionibus succinctis. Lund. 399-531.
Bliding, C. (1968). A critical survey of European taxa in Ulvales. II. Ulva, Ulvaria, Monostroma, Kornmannia. Botaniska Notiser, 121. p. 535-629.
Dion, P.; Reviers, B. de; Coat, G. (1998). Ulva armoricana sp. nov. (Ulvales, Chlorophyta) from the coasts of Brittany (France). I. Morphological identification. European Journal of Phycology. 33: 73-80, 16 figs, 1 table.