Giaretta, A. A., F. G. de Freitas, M. M. Antoniazzi, and C. Jared. “Tadpole Buccal Secretory Glands As New Support for a Neotropical Clade of Frogs”. Zootaxa, vol. 3011, no. 1, Sept. 2011, pp. 38–44, doi:10.11646/zootaxa.3011.1.4.