For all except those indicated below: "Discography Hilary Duff". Australian-Charts.com. Hung Medien. Archived from the original on September 5, 2018. Retrieved February 28, 2010.
"Hilary Duff Information". houstonrodeo. HOUSTON RODEO. Archived from the original on 9 April 2017. Retrieved 8 April 2017. "Metamorphosis" sold more than 5 million copies worldwide.
"Hilary Duff Information". houstonrodeo. HOUSTON RODEO. Archived from the original on 9 April 2017. Retrieved 8 April 2017. "Metamorphosis" sold more than 5 million copies worldwide.
For all except those indicated below: "Discography Hilary Duff". Australian-Charts.com. Hung Medien. Archived from the original on September 5, 2018. Retrieved February 28, 2010.
"Going for Adds"(PDF). American Radio History. R&R. August 9, 2002. p. 33. Archived(PDF) from the original on June 12, 2020. Retrieved June 12, 2020.
"Going for Adds"(PDF). American Radio History. R&R. November 29, 2002. p. 26. Archived(PDF) from the original on June 12, 2020. Retrieved June 12, 2020.
"Going for Adds"(PDF). American Radio History. R&R. August 9, 2002. p. 33. Archived(PDF) from the original on June 12, 2020. Retrieved June 12, 2020.
"Going for Adds"(PDF). American Radio History. R&R. November 29, 2002. p. 26. Archived(PDF) from the original on June 12, 2020. Retrieved June 12, 2020.