Erlandson, Jon M., Torben C. Rick, Terry L. Jones, and Judith F. Porcasi. "One If by Land, Two If by Sea: Who Were the First Californians?" California Prehistory: Colonization, Culture, and Complexity.  Eds. Terry L. Jones and Kathryn A. Klar. Lanham, Maryland: AltaMira Press, 2010. 53-62. ISBN 978-0759119604.