* Hirth, Kenneth G. (editor) (2000) "Archaeological Research at Xochicalco", "Volume 1, Ancient Urbanism at Xochicalco: The Evolution and Organization of a Pre-Hispanic Society.
* Hirth, Kenneth G. (editor) (2000) "Archaeological Research at Xochicalco", "Volume 1, Ancient Urbanism at Xochicalco: The Evolution and Organization of a Pre-Hispanic Society.