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<h2 id="references">References</h2> <ol> <li id="fn:1"><p>Peregrine, Peter N; Ember, Melvin (2002). Encyclopedia of Prehistory: Volume 5: Middle America. Boston, MA: Springer US. doi:10.1007/978-1-4615-0525-9. ISBN 978-1-4615-0525-9. OCLC 858882346. <a href="978-1-4615-0525-9" target="_blank">978-1-4615-0525-9</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> </ol>