^Jeon Hyeong-hwa (6 Jun 2021). "뮤지션 비비, '여고괴담6'서 배우 김형서로 파격 변신" [Musician BB, transforms into actor Kim Hyung-seo in 'Girls' High School Ghost Story 6] (بالكورية). Star News. Archived from the original on 2021-06-06. Retrieved 2021-06-06 – via Naver.
^Kim Bo-ra (25 Jan 2023). "유령' 김종수x이주영x김중희x비비, 잠깐 등장해도 빛나는 존재감" ['Ghost' Kim Jong-soo x Lee Joo-young x Kim Joong-hee x Bibi, a shining presence even if they appear for a short time] (بالكورية). OSEN. Archived from the original on 2023-01-25. Retrieved 2023-01-25 – via Naver.
^Kang Nae-ri (26 Sep 2022). "느와르 영화 '화란', 송중기X홍사빈X비비 캐스팅…13일 크랭크인" [Noir movie 'Hwaran' casts Song Joong-ki X Hong Sa-bin X Bibi... 13 days crank-in] (بالكورية). YTN. Archived from the original on 2022-09-26. Retrieved 2022-09-26 – via Naver.
^Yoon Hyo-jeong (28 Aug 2023). "지창욱·위하준·임세미·비비(김형서)…'최악의 악' 포스터 공개" [Ji Chang-wook · Wi Ha-joon · Lim Se-mi · Vivi (Kim Hyung-seo)... 'Worst Evil' poster released] (بالكورية). News1. Archived from the original on 2023-08-29. Retrieved 2023-08-28 – via Naver.