블랙데이, 올리브영 이벤트… "솔로 아니면 못 사?" [Black Day, OliveYoung Event... "Can't buy it if you're not single?"]. DKBnews (بالكورية). donga.com. 14 Apr 2014. Archived from the original on 2014-04-15. Retrieved 2014-04-14.
블랙데이, 올리브영 이벤트… "솔로 아니면 못 사?" [Black Day, OliveYoung Event... "Can't buy it if you're not single?"]. DKBnews (بالكورية). donga.com. 14 Apr 2014. Archived from the original on 2014-04-15. Retrieved 2014-04-14.