Economic regions of <a href="https://en.wikipedia.org/wiki/California" class="extiw" title="en:California">California</a>, as defined by California Economic Strategy Panel, October 2006
<span class="int-own-work" lang="en">Own work</span> Based on <a href="//commons.wikimedia.org/wiki/File:California_county_map_(labeled).svg" title="File:California county map (labeled).svg">File:California county map (labeled).svg</a> by <a href="//commons.wikimedia.org/wiki/User:Thadius856" title="User:Thadius856">User:Thadius856</a>
2010-03-02
<span class="int-own-work" lang="en">Own work</span> based on <a rel="nofollow" class="external text" href="https://web.archive.org/web/20111001045752/http://www.labor.ca.gov/panel/pdf/CESP_Regions_100606.pdf">California Economic Strategy Panel Regions</a> (PDF). California Labor Workforce and Development Agency (October 2006). Archived from <a rel="nofollow" class="external text" href="http://www.labor.ca.gov/panel/pdf/CESP_Regions_100606.pdf">the original</a> on <span class="mw-formatted-date" title="2011-10-01">2011-10-01</span>. Retrieved on <span class="mw-formatted-date" title="2010-03-01">March 1, 2010</span>.