"International Exchange". List of Affiliation Partners within Prefectures. Council of Local Authorities for International Relations (CLAIR). Archived from the original on 4 March 2016. Retrieved 21 November 2015.
jkn21.com
rekishi.jkn21.com
"銚子市" [Choshi]. Nihon Rekishi Chimei Taikei (in Japanese). Tokyo: Shogakukan. 2012. OCLC173191044. Archived from the original on 2007-08-25. Retrieved 2012-05-25.
"銚子市" [Chōshi]. Nihon Daihyakka Zensho (Nipponika) (in Japanese). Tokyo: Shogakukan. 2012. OCLC153301537. Archived from the original on 2007-08-25. Retrieved 2012-06-26.
"Chōshi". Encyclopedia of Japan. Tokyo: Netto Adobansusha. 2011. Archived from the original on 2007-08-25. Retrieved 2011-11-19.
"銚子市" [Choshi]. Nihon Rekishi Chimei Taikei (in Japanese). Tokyo: Shogakukan. 2012. OCLC173191044. Archived from the original on 2007-08-25. Retrieved 2012-05-25.
"銚子市" [Chōshi]. Nihon Daihyakka Zensho (Nipponika) (in Japanese). Tokyo: Shogakukan. 2012. OCLC153301537. Archived from the original on 2007-08-25. Retrieved 2012-06-26.
"Chōshi". Encyclopedia of Japan. Tokyo: Netto Adobansusha. 2011. Archived from the original on 2007-08-25. Retrieved 2011-11-19.
"International Exchange". List of Affiliation Partners within Prefectures. Council of Local Authorities for International Relations (CLAIR). Archived from the original on 4 March 2016. Retrieved 21 November 2015.
worldcat.org
search.worldcat.org
"銚子市" [Choshi]. Nihon Rekishi Chimei Taikei (in Japanese). Tokyo: Shogakukan. 2012. OCLC173191044. Archived from the original on 2007-08-25. Retrieved 2012-05-25.
"銚子市" [Chōshi]. Nihon Daihyakka Zensho (Nipponika) (in Japanese). Tokyo: Shogakukan. 2012. OCLC153301537. Archived from the original on 2007-08-25. Retrieved 2012-06-26.