"Eurochart Hot 100 Singles"(PDF). Music & Media. Vol. 8, no. 33. August 17, 1991. p. 21. Archived(PDF) from the original on July 18, 2020. Retrieved April 27, 2020.
"Top 10 Sales in Europe"(PDF). Music & Media. Vol. 8, no. 30. July 27, 1991. p. 20. Archived(PDF) from the original on July 13, 2020. Retrieved November 22, 2019.
"Eurochart Hot 100 1991"(PDF). Music & Media. Vol. 8, no. 51–52. December 21, 1991. p. 21. Archived(PDF) from the original on December 31, 2020. Retrieved January 17, 2020 – via World Radio History.
"Eurochart Hot 100 Singles"(PDF). Music & Media. Vol. 8, no. 33. August 17, 1991. p. 21. Archived(PDF) from the original on July 18, 2020. Retrieved April 27, 2020.
"Top 10 Sales in Europe"(PDF). Music & Media. Vol. 8, no. 30. July 27, 1991. p. 20. Archived(PDF) from the original on July 13, 2020. Retrieved November 22, 2019.
"Eurochart Hot 100 1991"(PDF). Music & Media. Vol. 8, no. 51–52. December 21, 1991. p. 21. Archived(PDF) from the original on December 31, 2020. Retrieved January 17, 2020 – via World Radio History.