Tornabene, L., J. L. van Tassell, and D. R. Robertson. “Microgobius Urraca (Teleostei: Gobiidae), a New Species of Goby from the Tropical Eastern Pacific”. Zootaxa, vol. 3447, no. 1, Aug. 2012, pp. 41–55, doi:10.11646/zootaxa.3447.1.3.