REFERENCES
- Byers, D.S. (ed.). 1968. The Prehistory of the Tehuacan Valley: I. Environment and Subsistence. Austin: The University of Texas Press.
- Flannery, K.V. (ed.). 1986. Guila' Naquitz: Archaic Foraging and Early Agriculture in Oaxaca, Mexico. New York: Academic.
- Piperno D.R. and K.V. Flannery. 2001 The earliest archaeological maize (Zea mays L.) from highland Mexico: New accelerator mass spectrometry dates and their implications. Proceedings of the National Academy of Sciences, USA 98(4):2101–2103.