Grenat, P. R., and L. Martino. “The Release Call As a Diagnostic Character Between Cryptic Related Species Odontophrynus cordobae and O. Americanus (Anura: Cycloramphidae)”. Zootaxa, vol. 3635, no. 5, Apr. 2013, pp. 583–586, doi:10.11646/zootaxa.3635.5.8.