Baek, Ji-eun (November 19, 2021). "[공식] '걸스플래닛999' 김수연, 미스틱 1호 걸그룹 빌리 합류…활동명 션 변경" [[Official] 'Girls Planet 999' Kim Soo-yeon joins Mystic's first girl group Billy... Change the activity name]. Chosun. Diarkibkan daripada yang asal pada November 20, 2021. Dicapai pada November 20, 2021.
circlechart.kr
Cumulative Sales of The Collective Soul and Unconscious: Chapter One
"Gaon Album Chart". Gaon (dalam bahasa Korea). Korea Music Content Association (KMCA). Diarkibkan daripada yang asal pada August 27, 2015. Dicapai pada June 30, 2016.
2021년 12월 Album Chart [December 2021 Album Chart]. Gaon Music Chart (dalam bahasa Korea). Diarkibkan daripada yang asal pada January 7, 2022. Dicapai pada January 6, 2022.
Peaks on the Circle Download Chart:
"Ring X Ring": 2021년 46주차 Download Chart [Week 46 of 2021 Download Chart]. Gaon Music Chart (dalam bahasa Korea). Diarkibkan daripada yang asal pada November 20, 2021. Dicapai pada November 20, 2021.
"미스틱스토리, 김수현·문수아 걸그룹 11월 론칭(공식)" [Mystic Story, Kim Soo-hyun, Moon Soo-ah girl group launched in November (official)]. inews24 (dalam bahasa Korea). September 14, 2021. Diarkibkan daripada yang asal pada December 4, 2021. Dicapai pada December 4, 2021.
"미스틱 첫 걸그룹, 그룹명 빌리..11월 6인조 데뷔[공식]" [Mystic's first girl group, group name Billy... Debut as a 6-member group in November [Official]]. 스타뉴스 (dalam bahasa Korea). October 12, 2021. Diarkibkan daripada yang asal pada December 4, 2021. Dicapai pada December 4, 2021.
mosen.mt.co.kr
OSEN (August 27, 2015). "'언프리티2', YG 문수아 포함 래퍼 11인 단체포스터 공개" ['Unpretty 2' released a group poster with 11 rappers, including YG Moon Soo-ah]. mosen.mt.co.kr (dalam bahasa Korea). Diarkibkan daripada yang asal pada December 4, 2021. Dicapai pada December 4, 2021.
naver.com
entertain.naver.com
Song Bong-seok (December 14, 2021). "신예 빌리(Billlie), 유니크한 세계관 담은 신곡 'snowy night'" [Rookie Billie, new song 'snowy night' with a unique worldview] (dalam bahasa Korea). Sports Kyunghyang. Diarkibkan daripada yang asal pada December 14, 2021. Dicapai pada December 14, 2021 – melalui Naver.
"빌리, 데뷔 1달 된 신인 맞아? 겨울 감성 한도초과한 'Snowy Night'('돌들의 침묵')[종합]" [Billlie, are you a rookie who debuted a month ago? 'Snowy Night' ('Silence of the Stones'), which exceeded the limit of winter emotion [General]] (dalam bahasa Korea). Osen. December 16, 2021. Diarkibkan daripada yang asal pada December 17, 2021. Dicapai pada December 17, 2021 – melalui Naver.
"빌리, 23일 컴백 확정..탄탄한 세계관 확장 예고 [공식]" [Billy confirms comeback on the 23rd..Solid worldview expansion notice [Official]] (dalam bahasa Korea). Osen. February 11, 2022. Diarkibkan daripada yang asal pada February 12, 2022. Dicapai pada February 11, 2022 – melalui Naver.
"[공식] '10월 컴백' 빌리, 신곡 일부 틱톡 선공개…첫 영어곡 기대" [[Official] 'October comeback' Billlie, new song preview released on TikTok... anticipations for first English song] (dalam bahasa Korea). Sports Chosun. September 25, 2023. Dicapai pada September 25, 2023 – melalui Naver.
"빌리, 10월 컴백…'활동중단' 문수아·수현 제외 5인 체제" [Billlie, comeback on October.. halted activities' Moon Sua, Suhyeon to be excluded, 5 members' comeback] (dalam bahasa Korea). NEWSIS. September 19, 2023. Dicapai pada September 24, 2023 – melalui Naver.
n.news.naver.com
"'미스틱 첫 걸그룹' 빌리, 데뷔 전 팬송 'FLOWERLD' 이색 선공개" ['Mystic's first girl group' Billy, pre-debut fan song 'FLOWERLD', a unique pre-release]. news.naver (dalam bahasa Korea). October 28, 2021. Diarkibkan daripada yang asal pada October 28, 2021. Dicapai pada October 31, 2021.
"'걸스플래닛999' 김수연, 빌리 합류+활동명 션으로 변경(공식입장)" ['Girls Planet 999' Kim Soo-yeon joins Billlie + changes her activity name to Sheon (official position)]. news.naver (dalam bahasa Korea). October 28, 2021. Diarkibkan daripada yang asal pada November 19, 2021. Dicapai pada November 19, 2021.
Park, Ah-reum (August 8, 2022). "빌리, 8월 말 초고속 컴백‥걸그룹 대전 합류[공식]" [Billlie, a high-speed comeback at the end of August…[Official]]. Newsen (dalam bahasa Korea). Diarkibkan daripada yang asal pada August 26, 2022. Dicapai pada August 26, 2022 – melalui Naver.
news1.kr
"빌리, '에이틴' 여보람 걸그룹 데뷔→문수아 12년 연습 빛보기까지 [N인터뷰]" [Billy, 'A-Teen' Yeo Bo-ram's girl group debut → Moon Soo-ah's 12-year practice shine [N Interview]]. 뉴스1 (dalam bahasa Korea). November 20, 2021. Diarkibkan daripada yang asal pada December 4, 2021. Dicapai pada December 4, 2021.
週間 アルバムランキング 2022年09月05日~2022年09月11日 [Weekly Album Ranking September 5, 2022 to September 11, 2022] (dalam bahasa Jepun). Oricon. Diarkibkan daripada yang asal pada September 14, 2022. Dicapai pada September 14, 2022.
"'언프리티 랩스타 시즌2' 마지막회, 어차피 우승은 트루디, 최대의 수혜자는 예지, 성장은 수아-전지윤 (종합)" [The last episode of 'Unpretty Rapstar Season 2', the winner is Trudy anyway, the biggest beneficiary is Yeji, and the growth is Sua, Jeon Ji-yoon (comprehensive)]. 스포츠Q(큐) (dalam bahasa Korea). November 14, 2015. Diarkibkan daripada yang asal pada December 4, 2021. Dicapai pada December 4, 2021.
"미스틱스토리, 김수현·문수아 걸그룹 11월 론칭(공식)" [Mystic Story, Kim Soo-hyun, Moon Soo-ah girl group launched in November (official)]. inews24 (dalam bahasa Korea). September 14, 2021. Diarkibkan daripada yang asal pada December 4, 2021. Dicapai pada December 4, 2021.
"미스틱 첫 걸그룹, 그룹명 빌리..11월 6인조 데뷔[공식]" [Mystic's first girl group, group name Billy... Debut as a 6-member group in November [Official]]. 스타뉴스 (dalam bahasa Korea). October 12, 2021. Diarkibkan daripada yang asal pada December 4, 2021. Dicapai pada December 4, 2021.
OSEN (August 27, 2015). "'언프리티2', YG 문수아 포함 래퍼 11인 단체포스터 공개" ['Unpretty 2' released a group poster with 11 rappers, including YG Moon Soo-ah]. mosen.mt.co.kr (dalam bahasa Korea). Diarkibkan daripada yang asal pada December 4, 2021. Dicapai pada December 4, 2021.
"'언프리티 랩스타 시즌2' 마지막회, 어차피 우승은 트루디, 최대의 수혜자는 예지, 성장은 수아-전지윤 (종합)" [The last episode of 'Unpretty Rapstar Season 2', the winner is Trudy anyway, the biggest beneficiary is Yeji, and the growth is Sua, Jeon Ji-yoon (comprehensive)]. 스포츠Q(큐) (dalam bahasa Korea). November 14, 2015. Diarkibkan daripada yang asal pada December 4, 2021. Dicapai pada December 4, 2021.
"빌리, '에이틴' 여보람 걸그룹 데뷔→문수아 12년 연습 빛보기까지 [N인터뷰]" [Billy, 'A-Teen' Yeo Bo-ram's girl group debut → Moon Soo-ah's 12-year practice shine [N Interview]]. 뉴스1 (dalam bahasa Korea). November 20, 2021. Diarkibkan daripada yang asal pada December 4, 2021. Dicapai pada December 4, 2021.
Baek, Ji-eun (November 19, 2021). "[공식] '걸스플래닛999' 김수연, 미스틱 1호 걸그룹 빌리 합류…활동명 션 변경" [[Official] 'Girls Planet 999' Kim Soo-yeon joins Mystic's first girl group Billy... Change the activity name]. Chosun. Diarkibkan daripada yang asal pada November 20, 2021. Dicapai pada November 20, 2021.
"'미스틱 첫 걸그룹' 빌리, 데뷔 전 팬송 'FLOWERLD' 이색 선공개" ['Mystic's first girl group' Billy, pre-debut fan song 'FLOWERLD', a unique pre-release]. news.naver (dalam bahasa Korea). October 28, 2021. Diarkibkan daripada yang asal pada October 28, 2021. Dicapai pada October 31, 2021.
"'걸스플래닛999' 김수연, 빌리 합류+활동명 션으로 변경(공식입장)" ['Girls Planet 999' Kim Soo-yeon joins Billlie + changes her activity name to Sheon (official position)]. news.naver (dalam bahasa Korea). October 28, 2021. Diarkibkan daripada yang asal pada November 19, 2021. Dicapai pada November 19, 2021.
Song Bong-seok (December 14, 2021). "신예 빌리(Billlie), 유니크한 세계관 담은 신곡 'snowy night'" [Rookie Billie, new song 'snowy night' with a unique worldview] (dalam bahasa Korea). Sports Kyunghyang. Diarkibkan daripada yang asal pada December 14, 2021. Dicapai pada December 14, 2021 – melalui Naver.
"빌리, 데뷔 1달 된 신인 맞아? 겨울 감성 한도초과한 'Snowy Night'('돌들의 침묵')[종합]" [Billlie, are you a rookie who debuted a month ago? 'Snowy Night' ('Silence of the Stones'), which exceeded the limit of winter emotion [General]] (dalam bahasa Korea). Osen. December 16, 2021. Diarkibkan daripada yang asal pada December 17, 2021. Dicapai pada December 17, 2021 – melalui Naver.
"빌리, 23일 컴백 확정..탄탄한 세계관 확장 예고 [공식]" [Billy confirms comeback on the 23rd..Solid worldview expansion notice [Official]] (dalam bahasa Korea). Osen. February 11, 2022. Diarkibkan daripada yang asal pada February 12, 2022. Dicapai pada February 11, 2022 – melalui Naver.
Park, Ah-reum (August 8, 2022). "빌리, 8월 말 초고속 컴백‥걸그룹 대전 합류[공식]" [Billlie, a high-speed comeback at the end of August…[Official]]. Newsen (dalam bahasa Korea). Diarkibkan daripada yang asal pada August 26, 2022. Dicapai pada August 26, 2022 – melalui Naver.
"Gaon Album Chart". Gaon (dalam bahasa Korea). Korea Music Content Association (KMCA). Diarkibkan daripada yang asal pada August 27, 2015. Dicapai pada June 30, 2016.
2021년 12월 Album Chart [December 2021 Album Chart]. Gaon Music Chart (dalam bahasa Korea). Diarkibkan daripada yang asal pada January 7, 2022. Dicapai pada January 6, 2022.
Cumulative Sales of The Collective Soul and Unconscious: Chapter One
週間 アルバムランキング 2022年09月05日~2022年09月11日 [Weekly Album Ranking September 5, 2022 to September 11, 2022] (dalam bahasa Jepun). Oricon. Diarkibkan daripada yang asal pada September 14, 2022. Dicapai pada September 14, 2022.
"Ring X Ring": 2021년 46주차 Download Chart [Week 46 of 2021 Download Chart]. Gaon Music Chart (dalam bahasa Korea). Diarkibkan daripada yang asal pada November 20, 2021. Dicapai pada November 20, 2021.