【約45年の活躍に幕】ダイヤ改正を前に201系が大和路線での運用を終了 [(After 45 years of service) 201 series ends service on Yamatoji Line ahead of timetable revision]. RM News (in Japanese). Japan: Neko Publishing. 19 March 2025. Retrieved 14 May 2025.
"おおさか東線で221系の運用開始" [221 series starts operation on the Osaka Higashi Line]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 12 March 2022. Retrieved 23 April 2024.
京葉線の201系が定期運用を終える [Keiyō Line 201 series withdrawn from regular service]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 21 June 2011. Retrieved 21 June 2011.