"[MOM1821]大阪桐蔭MF菊井悠介(2年)_「関西U-16」大会初代得点王がNBカップ準決勝で逆転勝利導く2発" [[MOM1821] Osaka Toin MF Yusuke Kikui (2nd year) _ "Kansai U-16" tournament first top scorer leads to a come-from-behind victory in the NB Cup semi-final]. web.gekisaka.jp (in Japanese). 24 July 2016. Retrieved 14 March 2022.
"[MOM2398]大阪桐蔭FW菊井悠介(3年)_「GKが見えてないんじゃないか」冷静な分析が呼んだ直接CK弾" [[MOM2398] Osaka Toin FW Yusuke Kikui (3rd year) _ "I think you can't see the GK" Direct CK bullets called by a calm analysis]. web.gekisaka.jp (in Japanese). 2 January 2018. Retrieved 14 March 2022.
"J3降格の松本、今季関東1部を制した流経大の守護神・薄井覇斗、FW菊井悠介が加入内定" [Matsumoto, who was demoted to J3, Hato Usui, the guardian deity of Ryutsu Keidai who won the first division of Kanto this season, and Yusuke Kikui, FW, have been unofficially decided to join.]. news.yahoo.co.jp (in Japanese). 23 December 2021. Retrieved 14 March 2022.
