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Hyun Ji-min (8 July 2016). "크레용팝, 업그레이드돼 돌아온다…8월 말 컴백" [Upgraded Crayon Pop will have a comeback at the end of August]. TenAsia (in Korean). Archived from the original on 4 August 2016. Retrieved 28 July 2016.
Jo Hye-jin (20 November 2014). 크레용팝-케이머치-단발머리-짠짠, 크리스마스 캐럴로 뭉친다 '러브 크리스마스' 발매 [Crayon Pop–K-Much–Bob Girls–Zan Zan, to release Christmas Carol 'Love Christmas']. Top Star News (in Korean). Retrieved 20 November 2014.
Park Su-jeong (2 September 2015). 크레용팝 소속사 남성 듀오 짠짠, 소속사와 전속계약 해지 합의 [Zan Zan belonging to Chrome Entertainment (Crayon Pop) announces departure from the agency]. TenAsia (in Korean). Archived from the original on 8 December 2015. Retrieved 2 November 2015.
Hyun Ji-min (8 July 2016). "크레용팝, 업그레이드돼 돌아온다…8월 말 컴백" [Upgraded Crayon Pop will have a comeback at the end of August]. TenAsia (in Korean). Archived from the original on 4 August 2016. Retrieved 28 July 2016.