Rovito, S. M., Papenfuss, T. J., & Vásquez-Almazán, C. R. (2012). A new species of Sibon (Squamata: Colubridae) from the mountains of eastern Guatemala. Zootaxa, 3266(1), 62–68. https://doi.org/10.11646/zootaxa.3266.1.5