Lima, R. D. “The Gould’s Toucanet Selenidera gouldii (Natterer, 1837) (Aves: Ramphastidae) As a Monotypic Species”. Zootaxa, vol. 5446, no. 2, Apr. 2024, pp. 265-73, doi:10.11646/zootaxa.5446.2.8.