Cacciali, Pier. “Chromatic Variation in Populations of <i>Xenodon merremi</I> (Serpentes: Dipsadidae) in Paraguay”.
Acta Herpetologica
5, no. 1 (July 1, 2010): 107–112. Accessed April 4, 2025. https://oaj.fupress.net/index.php/ah/article/view/1587.