Cheung, P. (1993)
Eimeria southwelli Halawani, 1930 (Apicomplexa: Coccidia) from a new host, the cownose ray, Rhinoptera bonasus Mitchill. Journal of Aquariculture and Aquatic Sciences, 6(3), 68–75
Stamper, M.A. & Lewbart, G.A. & Barrington, P.R. & Harms, C.A. & Geoly, F. & Stoskopf, M.K. (1998)
Eimeria southwelli infection associated with high mortality of cownose rays. Journal of Aquatic Animal Health, 10(3), 264–270
DOI: 10.1577/1548-8667(1998)010<0264:ESIAWH>2.0.CO;2
Saraiva, A. & Eiras, J.C. & Cruz, C. & Xavier, R. (2023)
Synopsis of the Species of Coccidians Reported in Marine Fish. Animals, 13(13), Article 2119
DOI: 10.3390/ani13132119