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census.gov
quickfacts.census.gov
Orange County QuickFacts from the US Census Bureau [online]. Quickfacts.census.gov, [cit. 2010-07-22]. Dostupné online. Archivované 2011-07-13 z originálu.
web.archive.org
Orange County QuickFacts from the US Census Bureau [online]. Quickfacts.census.gov, [cit. 2010-07-22]. Dostupné online. Archivované 2011-07-13 z originálu.