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Hwang Chae-hyun (November 16, 2021). "엄지, 라디오 DJ 데뷔" [Umji debuts as a radio DJ] (in Korean). Sports Kyunghyang. Archived from the original on November 16, 2021. Retrieved November 16, 2021 – via Naver.
n.news.naver.com
Ahn, Byung-gil (November 1, 2020). ‘아는 형님’ 여자친구, 베일 속 ‘MAGO’ 노출 ['Knowing Brother' GFriend exposes 'MAGO' in veil]. Sports trend (in Korean). Archived from the original on November 18, 2020. Retrieved November 19, 2020 – via Naver.
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Ahn, Byung-gil (November 1, 2020). ‘아는 형님’ 여자친구, 베일 속 ‘MAGO’ 노출 ['Knowing Brother' GFriend exposes 'MAGO' in veil]. Sports trend (in Korean). Archived from the original on November 18, 2020. Retrieved November 19, 2020 – via Naver.
Jang, Woo-young (October 6, 2021). 여자친구 은하x신비x엄지, BPM엔터 전속계약..3인조 그룹 예고 [전문] [GFriend Eunha x Sinbi x Umji, BPM Entertainment exclusive contract..3 member group notice]. OSEN (in Korean). Archived from the original on October 6, 2021. Retrieved October 6, 2021 – via Naver.
Hwang Chae-hyun (November 16, 2021). "엄지, 라디오 DJ 데뷔" [Umji debuts as a radio DJ] (in Korean). Sports Kyunghyang. Archived from the original on November 16, 2021. Retrieved November 16, 2021 – via Naver.