"JR九州 筑肥線に305系通勤型直流電車投入" [JR Kyushu to introduce 305 series DC commuter trains on Chikuhi Line]. Tetsudo Hobidas (in Japanese). Japan: Neko Publishing. 1 August 2014. Archived from the original on 23 January 2015. Retrieved 1 August 2014.
tetsudo-ch.com
福岡市地下鉄空港線・箱崎線へ新型車両「4000系」導入 24年秋ごろ運用開始 [New 4000 series trains to be introduced on the Fukuoka City Subway Kuko Line and Hakozaki Line. Operation will begin around fall 2024.]. Tetsudo Channel (in Japanese). 2023-11-30. Retrieved 2023-11-30.
web.archive.org
"JR九州 筑肥線に305系通勤型直流電車投入" [JR Kyushu to introduce 305 series DC commuter trains on Chikuhi Line]. Tetsudo Hobidas (in Japanese). Japan: Neko Publishing. 1 August 2014. Archived from the original on 23 January 2015. Retrieved 1 August 2014.
