Kim Su-jeong (April 18, 2022). "[단독]TRCNG 출신 지훈·현우·시우·강민, 새 소속사 찾았다" [[Exclusive] Jihoon, Hyunwoo, Siwoo, and Kangmin from TRCNG found a new agency] (به کرهای). Nocut News. Retrieved April 18, 2022 – via Naver.
Jung Hee-yeon (December 1, 2021). "유지애·김소정→온유·성열 '4분 44초' 캐스팅 [공식]" [Yoo Ji-ae, Kim So-jeong → Onew, Seong-yeol's '4:44' Casting [Official]] (به کرهای). Sports Donga. Retrieved December 1, 2021 – via Naver.
