Округ (Сједињене Америчке Државе) — разлика између измена

* {{KaneAmericanCounties2004}}

* {{MorrisEncyclopediaOfAmericanHistory}}

{{refend}}

* {{Cite book |ref= harv|title=The American Counties: Origins of County Names, Dates of Creation, and Population Data, 1950-2000 |last=Kane |first=Joseph Nathan |authorlink= |coauthors=Charles Curry Aiken |year=2004 |publisher=The Scarecrow Press, Inc |location= |isbn=978-0810850361 |oclc= |page=vii-xii |pages=560 |url= |accessdate = 23. 9. 2009.}}