"1999.08월 - 가요 음반 판매량" (in Korean). Recording Industry Association of Korea. Archived from the original on May 14, 2008. Retrieved December 2, 2020.
"2002년 - 가요 음반 판매량" (in Korean). Recording Industry Association of Korea. Archived from the original on February 28, 2009. Retrieved December 2, 2020.
"2003년 - 가요 음반 판매량" (in Korean). Recording Industry Association of Korea. Archived from the original on February 28, 2009. Retrieved December 2, 2020.
"2004.09월 - 가요 음반 판매량" (in Korean). Recording Industry Association of Korea. Archived from the original on February 5, 2009. Retrieved December 2, 2020.
"2008.6월 - 가요음반 판매량" (in Korean). Recording Industry Association of Korea. Archived from the original on February 15, 2009. Retrieved December 2, 2020.
"2005년 - 가요 총결산 음반 판매량" (in Korean). Recording Industry Association of Korea. Archived from the original on February 28, 2009. Retrieved December 3, 2020.
"2006.7월 - 가요음반 판매량" (in Korean). Recording Industry Association of Korea. Archived from the original on January 23, 2009. Retrieved December 3, 2020.
naver.com
entertain.naver.com
"[단신] OUN '일본대중문화론' 방영 外". Kookmin Ilbo (in Korean). 2000-12-20. Retrieved 2023-04-08 – via Naver News.
Recording Industry Association of Korea monthly chart. Studio albums:
Legend charting: "8월 가요 음반판매량집계" (in Korean). Recording Industry Association of Korea. Archived from the original on October 21, 1999. Retrieved December 2, 2020.
web.archive.org
Recording Industry Association of Korea monthly chart. Studio albums:
Legend charting: "8월 가요 음반판매량집계" (in Korean). Recording Industry Association of Korea. Archived from the original on October 21, 1999. Retrieved December 2, 2020.
"1999.08월 - 가요 음반 판매량" (in Korean). Recording Industry Association of Korea. Archived from the original on May 14, 2008. Retrieved December 2, 2020.
""워 아이 니, 김현정"". Hankook (in Korean). September 10, 2001. Archived from the original on October 29, 2013. Retrieved December 3, 2020.
"2002년 - 가요 음반 판매량" (in Korean). Recording Industry Association of Korea. Archived from the original on February 28, 2009. Retrieved December 2, 2020.
"2003년 - 가요 음반 판매량" (in Korean). Recording Industry Association of Korea. Archived from the original on February 28, 2009. Retrieved December 2, 2020.
"2004.09월 - 가요 음반 판매량" (in Korean). Recording Industry Association of Korea. Archived from the original on February 5, 2009. Retrieved December 2, 2020.
"2008.6월 - 가요음반 판매량" (in Korean). Recording Industry Association of Korea. Archived from the original on February 15, 2009. Retrieved December 2, 2020.
"2005년 - 가요 총결산 음반 판매량" (in Korean). Recording Industry Association of Korea. Archived from the original on February 28, 2009. Retrieved December 3, 2020.
"2006.7월 - 가요음반 판매량" (in Korean). Recording Industry Association of Korea. Archived from the original on January 23, 2009. Retrieved December 3, 2020.