↑Jung Yu-jin (April 5, 2021). "[단독] '벌새' 박지후, 이병헌·박보영 만난다..'콘크리트 유토피아' 합류" [[Exclusive]'Hummingbird' Park Ji-hoo, Lee Byung-hun and Park Bo-young meet... joining'Concrete Utopia']. News1 (ภาษาเกาหลี). Daum. สืบค้นเมื่อ April 16, 2021.
↑Kang Da-yoon (December 23, 2021). "김고은X남지현X박지후, '작은 아씨들' 캐스팅 확정 [공식]" [Kim Go-eun X Nam Ji-hyun X Park Ji-hoo confirmed for 'Little Women' [Official]] (ภาษาเกาหลี). My Daily. สืบค้นเมื่อ December 23, 2021 – โดยทาง Naver.