Sclater, P.L. (1857). «List of additional species of Mexican birds, obtained by M. Auguste Sallé from the environs of Jalapa and S. Andres Tuxtla». Proceedings of the Zoological Society of London(en inglés y latín). Pt.25 no.339: 201-207. Camptostoma, Camptostoma imberbe, p. 203. Disponible en Biodiversitas Heritage Library. ISSN0370-2774.
Sclater, P.L. (1857). «List of additional species of Mexican birds, obtained by M. Auguste Sallé from the environs of Jalapa and S. Andres Tuxtla». Proceedings of the Zoological Society of London(en inglés y latín). Pt.25 no.339: 201-207. Camptostoma, Camptostoma imberbe, p. 203. Disponible en Biodiversitas Heritage Library. ISSN0370-2774.