Jeon Hyung-hwa (April 8, 2021). "KTH가 투자한 '새콤달콤'이 넷플릭스로 간 까닭은?" [Why did KTH's investment 'Sweet and Sour' go to Netflix?]. Star News (dalam bahasa Korea). Naver. Diakses tanggal April 8, 2021.
Choi Jin-sil (January 9, 2020). "장기용X채수빈X정수정 '새콤달콤', 3개월 촬영 마치고 크랭크업…색다른 로코 예고" [Jang Ki Yong X Chae Soo Bin X Jung Soo Jung 'Sweet and Sour', crank up after 3 months of filming Unconventional Rocco Notice]. Sports Seoul (dalam bahasa Korea). Naver. Diakses tanggal April 8, 2021.
Kim Ji-hye (May 3, 2021). "장기용X채수빈의 로맨스 케미…'새콤달콤' 엿봤더니" [Jang Ki-yong x Chae Soo-bin's romance chemistry... I took a peek at'sweet and sour']. SBS Entertainment News (dalam bahasa Korea). Naver. Diakses tanggal May 7, 2021.
Park Ah-reum (October 8, 2019). "크리스탈 측 "'새콤달콤'으로 상업영화 데뷔, 장기용과 호흡"(공식입장)" [Crystal's "Commercial film debut with'Sweet and Sour', Jang Ki-yong and Breath" (Official position)]. Newsen (dalam bahasa Korea). Diakses tanggal April 7, 2021.