"元 関東鉄道キハ350形運行状況" [Former Kanto Railway KiHa 350 operation status]. 2427junction.com (in Japanese). Retrieved 12 April 2019.
mizurin.co.jp
「キハ37、38、30形式」の運転開始について [Start of KiHa 30 / 37 / 38 operations]. mizurin.co.jp (in Japanese). Japan: Mizushima Rinkai Railway news release. 14 April 2014. Archived from the original on 4 March 2019. Retrieved 4 March 2019.
mynavi.jp
news.mynavi.jp
Matsuo, Kazuto (21 October 2012). "キハ35系にキハ10系も! 国鉄形気動車が元気だった頃" [KiHa 35 series and KiHa 10 series! When the JNR railcars were in good shape]. news.mynavi.jp (in Japanese). Mynavi Corporation. Archived from the original on 4 March 2019. Retrieved 4 March 2019.
railf.jp
"久留里線でキハ30・キハ37・キハ38の運転終了" [End of Kuha 30, Kiha 37, Kiha 38 at Kururi Line]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 2 December 2012. Archived from the original on 4 March 2019. Retrieved 4 March 2019.
"キハ30,キハ37,キハ38の6両が水島臨海鉄道へ" [6 KiHa 30, KiHa 37, KiHa 38 to Mizushima Rinkai Railway]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 10 July 2013. Archived from the original on 4 March 2019. Retrieved 4 March 2019.
web.archive.org
Matsuo, Kazuto (21 October 2012). "キハ35系にキハ10系も! 国鉄形気動車が元気だった頃" [KiHa 35 series and KiHa 10 series! When the JNR railcars were in good shape]. news.mynavi.jp (in Japanese). Mynavi Corporation. Archived from the original on 4 March 2019. Retrieved 4 March 2019.
"久留里線でキハ30・キハ37・キハ38の運転終了" [End of Kuha 30, Kiha 37, Kiha 38 at Kururi Line]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 2 December 2012. Archived from the original on 4 March 2019. Retrieved 4 March 2019.
"キハ30,キハ37,キハ38の6両が水島臨海鉄道へ" [6 KiHa 30, KiHa 37, KiHa 38 to Mizushima Rinkai Railway]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 10 July 2013. Archived from the original on 4 March 2019. Retrieved 4 March 2019.
「キハ37、38、30形式」の運転開始について [Start of KiHa 30 / 37 / 38 operations]. mizurin.co.jp (in Japanese). Japan: Mizushima Rinkai Railway news release. 14 April 2014. Archived from the original on 4 March 2019. Retrieved 4 March 2019.