Umberger 2014 Tezcatlipoca and Huitzilopochtli: Political Dimensions of Aztec Deities, in Tezcatlipoca: Trickster and Supreme Aztec Deity, edited by Elizabeth Baquedano, University Press of Colorado, Niwot Emily Umberger

https://www.academia.edu/12232528/Umberger_2014_Tezcatlipoca_and_Huitzilopochtli_Political_Dimensions_of_Aztec_Deities_in_Tezcatlipoca_Trickster_and_Supreme_Aztec_Deity_edited_by_Elizabeth_Baquedano_University_Press_of_Colorado_Niwot