Latin American Studies; Tlaltecuhtli
http://www.latinamericanstudies.org/tlaltecuhtli.htm
Wikipedia; Tlaltecuhtli
https://en.wikipedia.org/wiki/Tlaltecuhtli
Tlaltecuhtli; The Jaws of Life and Death
http://www.matrifocus.com/LAM09/key.htm
The richness of the gifts of complex goddess tlaltecuhtli
http://przedkolumbem.blogspot.com/2015/01/bogactwo-darow-ofiarnych-zozonych.html
Mike Ruggeri's Toltec and Aztec World 