Gates, Terry A.; Sampson, Scott D.; Delgado de Jesús, Carlos R.; Zanno, Lindsay E.; Eberth, David; Hernandez-Rivera, René; Aguillón Martínez, Martha C.; and Kirkland, James I. (2007). “Velafrons coahuilensis, a new lambeosaurine hadrosaurid (Dinosauria: Ornithopoda) from the Late Campanian Cerro del Pueblo Formation, Coahuila, Mexico”. Journal of Vertebrate Paleontology27 (4): 917–930. doi:10.1671/0272-4634(2007)27[917:VCANLH]2.0.CO;2.