López-Fernández, H. and Taphorn, D. C. (2004) “Geophagus abalios, G. dicrozoster and G. winemilleri (Perciformes: Cichlidae), three new species from Venezuela”, Zootaxa. Auckland, New Zealand, 439(1), pp. 1–27. doi: 10.11646/zootaxa.439.1.1.