P. Bejarano-Muñoz, M. B. Pérez-Lara, and J. Brito M., “New information on the colouration and natural history of the Papallacta Robber Frog Pristimantis acerus (Lynch & Duellman, 1980) (Anura: Craugastoridae)”, ACI Av. Cienc. Ing. (Quito), vol. 7, no. 2, Dec. 2015, doi: 10.18272/aci.v7i2.251.