Ron, Santiago R., Eduardo Toral, Myrian Rivera, and Andrea Terán-Valdez. 2010. “A New Species of Engystomops (Anura: Leiuperidae) from Southwestern Ecuador”. Zootaxa 2606 (1). Auckland, New Zealand:25–49. https://doi.org/10.11646/zootaxa.2606.1.2.