Neko Publishing Co., Ltd. 14 March 2016. Retrieved 14 March 2016. "西武鉄道「サステナ車両」東急電鉄9000系＆小田急電鉄8000形を譲受" [Seibu receives Tokyu 9000 series and Odakyu 8000... 18 KB (1,840 words) - 11:10, 9 April 2024 |
 | ISBN 978-4533044694. "【小田急】8000形8255×6(8255F)廃車陸送". "西武，東急9000系と小田急8000形を「サステナ車両」として譲受" [Seibu to take ownership of Tokyu 9000 Series and Odakyu 8000 series... 11 KB (875 words) - 10:08, 30 April 2024 |
 | original on 14 January 2022. Retrieved 14 January 2022. "西武，東急9000系と小田急8000形を「サステナ車両」として譲受" [Seibu to take ownership of Tokyu 9000 Series and Odakyu 8000 series... 15 KB (1,251 words) - 10:12, 21 January 2024 |