1. Houston Stephen P. 1994 Classic Maya Depictions of the Built Environment. Paper presented at the Dumbarton Oaks symposium “Function and Meaning in Classic Maya Architecture.” Dumbarton Oaks Research Library and Collection, Washington, DC.
2. Furst Peter T. 1966 Shaft Tombs, Shell Trumpets and Shamanism: A Culture-Historical Approach to Problems in West Mexican Archaeology. Unpublished Ph.D. dissertation, Department of Anthropology, University of California, Los Angeles.