Ebert, D. A., D. L. Haas, and M. R. de Carvalho. “Tetronarce cowleyi, Sp. Nov., a New Species of Electric Ray from Southern Africa (Chondrichthyes: Torpediniformes: Torpedinidae)”. Zootaxa, vol. 3936, no. 2, Mar. 2015, pp. 237–250, doi:10.11646/zootaxa.3936.2.4.