Kim, Seon-woo (August 22, 2020). "아스트로 첫 유닛 문빈&산하, 9월 앨범 발매 확정… 매력 시너지 예고" [Astro's first unit, Moonbin & Sanha, will release their album in September. The preview of charm synergy.]. Sports Seoul (به کرهای). Naver. Retrieved July 10, 2021.{{cite web}}: نگهداری CS1: url-status (link)
oricon.co.jp
Peak positions on Oricon Album Chart:
In-Out: 週間 アルバムランキング 2020年10月05日付 [Weekly Album Ranking dated October 5, 2020]. Retrieved July 8, 2021.
