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k-mca.or.kr
"[한국음악콘텐츠협회] (사)한국음악콘텐츠협회, 음원∙앨범에 대한 '가온 인증제' 시행" [[Korea Music Content Association] Korea Music Contents Association, 'Gaon Accreditation System' for songs and albums] (in Korean). Korea Music Content Association. April 23, 2018. Archived from the original on November 11, 2018. Retrieved April 20, 2019.
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Cumulative Sales of Phantasy Pt. 1: Christmas in August:
"[한국음악콘텐츠협회] (사)한국음악콘텐츠협회, 음원∙앨범에 대한 '가온 인증제' 시행" [[Korea Music Content Association] Korea Music Contents Association, 'Gaon Accreditation System' for songs and albums] (in Korean). Korea Music Content Association. April 23, 2018. Archived from the original on November 11, 2018. Retrieved April 20, 2019.
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