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耶拿
- ^ Jena - 吉納. 國家教育研究院. [2021-06-27]. (原始内容存档于2021-11-09).
吉納
- ^ Census of Population and Housing. U.S. Census Bureau. [2011-11-18]. (原始内容存档于2006-02-08).
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James Forsythe from Jena, Illinois suggested “Jena, his hometown, which was named for Jena, Germany. Mr. James Forsythe submitted this name to the post office department and it was accepted. Thus, the name Jena came from Germany by way of Illinois