Wallert, Arie and Ron Boytner. “Dyes from the Tumilaca and Chiribaya Cultures, South Coast of Peru.” Journal of Archaeological Science 23/6 (1996): 853-861.

Wallert, Arie and Ron Boytner. “Dyes from the Tumilaca and Chiribaya Cultures, South Coast of Peru.” Journal of Archaeological Science 23/6 (1996): 853-861.