"Chōnan-machi". Nihon Rekishi Chimei Taikei (日本歴史地名大系 “Compendium of Japanese Historical Place Names”) (in Japanese). Tokyo: Netto Adobansusha. 2012. Archived from the original on 2007-08-25. Retrieved 2012-02-01.
"Chōnan-machi". Nihon Rekishi Chimei Taikei (日本歴史地名大系 “Compendium of Japanese Historical Place Names”) (in Japanese). Tokyo: Netto Adobansusha. 2012. Archived from the original on 2007-08-25. Retrieved 2012-02-01.
"Chōnan-machi". Nihon Rekishi Chimei Taikei (日本歴史地名大系 “Compendium of Japanese Historical Place Names”) (in Japanese). Tokyo: Netto Adobansusha. 2012. Archived from the original on 2007-08-25. Retrieved 2012-02-01.
"Chōnan-machi". Nihon Rekishi Chimei Taikei (日本歴史地名大系 “Compendium of Japanese Historical Place Names”) (in Japanese). Tokyo: Netto Adobansusha. 2012. Archived from the original on 2007-08-25. Retrieved 2012-02-01.