블랙데이, 올리브영 이벤트… "솔로 아니면 못 사?" [Black Day, OliveYoung Event... "Can't buy it if you're not single?"]. DKBnews (in Korean). The Dong-a Ilbo. April 14, 2014. Archived from the original on April 15, 2014. Retrieved April 14, 2014.
Phelan, Sarah (February 11–18, 2004). "Black Noodle Days". Metro Santa Cruz. Metro Publishing Inc. Archived from the original on March 20, 2014. Retrieved April 14, 2014.
Phelan, Sarah (February 11–18, 2004). "Black Noodle Days". Metro Santa Cruz. Metro Publishing Inc. Archived from the original on March 20, 2014. Retrieved April 14, 2014.
블랙데이, 올리브영 이벤트… "솔로 아니면 못 사?" [Black Day, OliveYoung Event... "Can't buy it if you're not single?"]. DKBnews (in Korean). The Dong-a Ilbo. April 14, 2014. Archived from the original on April 15, 2014. Retrieved April 14, 2014.