"Billboard 10 Nov 2001". Billboard. Vol. 113, no. 45. Nielsen Business Media, Inc. November 10, 2001. p. 50. ISSN0006-2510. Retrieved November 21, 2014.
"Billboard 27 Jul 1996". Billboard. Vol. 108, no. 30. Nielsen Business Media, Inc. July 27, 1996. p. 58. ISSN0006-2510. Retrieved November 21, 2014.
Inc, Nielsen Business Media (January 11, 1997). "Billboard". Nielsen Business Media, Inc. Retrieved December 19, 2018 – via Google Books. {{cite web}}: |last= has generic name (help)
"Billboard 10 Nov 2001". Billboard. Vol. 113, no. 45. Nielsen Business Media, Inc. November 10, 2001. p. 50. ISSN0006-2510. Retrieved November 21, 2014.
"Billboard 27 Jul 1996". Billboard. Vol. 108, no. 30. Nielsen Business Media, Inc. July 27, 1996. p. 58. ISSN0006-2510. Retrieved November 21, 2014.