Michael D. Coe, The Maya
Jeff Kowalski, The House of the Governor: A Maya Palace of Uxmal, Yucatan, Mexico
Nikolai Grube, Divine Kings of the Rain Forest
Karl Taube, Major Gods of Ancient Yucatan
Mary Miller and Karl Taube, The Gods and Symbols of Ancient Mexico and the Maya
Pollock, H.E. D. 1980 The Puuc: An Architectural Survey of the Hill Country of Yucatan and Northern Campeche,
Mexico. Memoirs of the Peabody Museum, Vol. 2
Jose Diaz-Bolio, The Geometry of the Maya and Their Rattlesnake Art
John Anthony West, Serpent in the Sky: The High Wisdom of Ancient Egypt
John Anthony West, The Travler’s Key to Ancient Egypt
Migual Angel Vergara Calleros, personal communication