Shim Eom-kyung (January 5, 2022). "[단독]오나라·윤균상, 매니지먼트에이엠나인과 전속계약…오랜 매니저와 의리" [[Exclusive] Na-ra Oh, Kyun-sang Yoon, exclusive contract with Management A.M.9... Long-time manager and loyalty] (به کرهای). SPOTV News. Retrieved January 5, 2022 – via Naver.
Jung Han-byul (January 5, 2022). "[단독] 윤균상·오나라, 후시크리에이티브와 전속계약 만료" [[Exclusive] Yoon Kyun-sang and Oh Na-ra, contract with Husi Creative expires] (به کرهای). Hankook Ilbo. Retrieved January 5, 2022 – via Naver.
Jung Yu-jin (January 6, 2022). "윤균상·오나라, 오랜 매니저와 의리 지켰다…신생 AM9 전속계약 [공식]" [Yoon Gyun-sang and Oh Na-ra kept their loyalty to their longtime manager... New AM9 exclusive contract [Official]] (به کرهای). News1. Retrieved January 6, 2022 – via Naver.