"写真・図版(6枚目)| いまとはまるで違う56年前の「二子玉川」 世田谷南西部を支えた路面電車「玉電」と「砧線」〈AERA〉" [Photos and illustrations: "Futako Tamagawa" 56 years ago, completely different from today Trams "Tamaden" and "Kinuta Line" that ran in the southwestern part of Setagaya]. AERA dot. 11 April 2020. Retrieved 5 March 2022.
mynavi.jp
news.mynavi.jp
Ueshin, Daisuke (17 March 2017). 東急田園都市線2020系、新型車両は「これまでにない新しさ」2018年春導入へ [New Tokyu Denentoshi Line 2020 series trains to be introduced in spring 2018]. Mynavi News (in Japanese). Japan. Archived from the original on 19 March 2017. Retrieved 19 March 2017.
"3月28日 大井町線の急行運転を開始。田園都市線の混雑緩和をめざします。" [March 28 Express service on the Oimachi Line begins. We aim to alleviate congestion on the Den-en-toshi Line.]. tokyu.co.jp. Archived from the original on 3 March 2009. Retrieved 6 August 2022.
trafficnews.jp
さようなら東急8500系! 最後の8637編成が引退 「これまでのご愛顧に感謝」 [Goodbye, Tokyu 8500 series! The set, 8637, has been retired]. Traffic News (in Japanese). 2023-01-25. Retrieved 2023-01-25.
"各駅・沿線情報" [Routes: Tokyu Corporation]. Tokyu Corporation (in Japanese). Archived from the original on 26 January 2022. Retrieved 18 March 2020.
"3月28日 大井町線の急行運転を開始。田園都市線の混雑緩和をめざします。" [March 28 Express service on the Oimachi Line begins. We aim to alleviate congestion on the Den-en-toshi Line.]. tokyu.co.jp. Archived from the original on 3 March 2009. Retrieved 6 August 2022.
Ueshin, Daisuke (17 March 2017). 東急田園都市線2020系、新型車両は「これまでにない新しさ」2018年春導入へ [New Tokyu Denentoshi Line 2020 series trains to be introduced in spring 2018]. Mynavi News (in Japanese). Japan. Archived from the original on 19 March 2017. Retrieved 19 March 2017.