"2019년 18주차 Digital Chart". Gaon Music Chart (in Korean). Korea Music Content Association. Archived from the original on December 27, 2019. Retrieved May 10, 2019.
2019년 05월 Digital Chart [May 2019 Digital Chart] (in Korean). Gaon Music Chart. Retrieved May 15, 2021.
"2019년 Digital Chart". Gaon Music Chart (in Korean). Korea Music Content Association. Archived from the original on February 26, 2020. Retrieved January 10, 2020.
"2019년 18주차 Digital Chart". Gaon Music Chart (in Korean). Korea Music Content Association. Archived from the original on December 27, 2019. Retrieved May 10, 2019.
"2019년 Digital Chart". Gaon Music Chart (in Korean). Korea Music Content Association. Archived from the original on February 26, 2020. Retrieved January 10, 2020.