Stutz, Colin (June 9, 2017). "Katy Perry YouTube Live Stream Wraps Monday With Live Concert; James Corden, Sia & More Guests to Pop In". Billboard. Archived from the original on June 10, 2017 . Retrieved June 10, 2017.

Starstrukk (feat. Katy Perry)". iTunes Store. September 14, 2009. Archived from the original on September 8, 2014 . Retrieved July 23, 2014. Blumenrath, Jan (October 18, 2010). "Interview with Chris Anokute". HitQuarters. Archived from the original on April 17, 2015 . Retrieved April 25, 2015. Grammys 2017: Katy Perry On The Meaning Behind 'Chained To The Rhythm' ". Access Hollywood. February 12, 2017. Archived from the original on May 21, 2017 . Retrieved May 5, 2017.Watts, Cindy (February 10, 2019). "Dolly Parton honored at Grammys with star-studded tribute from Katy Perry, Miley Cyrus and more". USA Today . Retrieved February 11, 2019. Katy Perry: I don’t think I could just waste my spell powers on any particular person. I think that if I could cast a spell on the world, it would be for more tolerance, and more compassion, and more empathy, and more education. They are a group of people with varying opinions that are not ‘yes’ people and are strong in their certain fields that maybe I’m not strong in, which is great because if you are going to build a team, build a team with people who are smarter in other areas than you’re smart in,” Perry tells THR, dressed in a lacy Libertine dress that complemented the magical setting and her Mad Potion-vibe perfectly. “We’re a real collaborative team and they’re not afraid of voicing their opinions.”

a b Trust, Gary (January 29, 2014). "Katy Perry's 'Dark Horse' Gallops to No. 1 on Hot 100". Billboard. Archived from the original on January 31, 2014 . Retrieved January 29, 2014.

Trust, Gary (February 17, 2014). "Ask Billboard: Katy Perry Regains No. 1 Momentum". Billboard. Archived from the original on October 11, 2014 . Retrieved September 27, 2014. Kaufman, Gil (December 18, 2020). "Katy Perry Drops Surprise 'Cosmic Energy' EP". Billboard . Retrieved January 7, 2021. Dark Horse (feat. Juicy J)". Rolling Stone. July 30, 2014. Archived from the original on October 22, 2014 . Retrieved October 21, 2014. Top 40/M Future Releases". All Access. Archived from the original on May 7, 2012 . Retrieved September 22, 2014.

Rutherford, Kevin (October 22, 2013). "Katy Perry Reveals 'Prism' Influences, Adds Stripped-Down Performances at Album Release Event". Billboard. Archived from the original on October 27, 2013 . Retrieved December 9, 2013. Baudler, Averi (May 9, 2022). "Katy Perry's Lace-Up Corset Minidress Is Giving Madonna". InStyle. It's no secret that Katy Perry has a unique sense of style. As the unofficial queen of camp, it's practically in the job description. Benjamin, Jeff (October 16, 2013). "Katy Perry Wails on New Single "Unconditionally" ". Fuse. Archived from the original on October 17, 2013 . Retrieved October 16, 2013. Loynes, Anna (January 5, 2012). "The Nielsen Company & Billboard's 2011 Music Industry Report". Business Wire. Archived from the original on January 8, 2012 . Retrieved January 5, 2012. a b c Hirschberg, Lynn (October 22, 2013). "Katy Perry". W. Archived from the original on October 25, 2013 . Retrieved November 1, 2013.Bell, Sadie (June 15, 2017). "Katy Perry's Witness World Wide Generated Over 49 Million Views". Billboard. Archived from the original on June 15, 2017 . Retrieved June 16, 2017. Katy Perry Makes Hilarious Cameo on Kroll Show". Maxim. March 26, 2014. Archived from the original on August 12, 2014 . Retrieved July 25, 2014. Enos, Morgan (April 30, 2018). "A Timeline of Katy Perry and Orlando Bloom's Relationship". Billboard. Archived from the original on October 6, 2018 . Retrieved October 6, 2018. Kanter, Sharon (February 16, 2017). "Shop It Now! Katy Perry Launches a Shoe Line, Names Styles After Her Famous Pals (Hillary Clinton's Is 'a Pep in Her Step!')". People . Retrieved January 14, 2022. Katy Perry tops Maxim's Hot 100 list". CNN. May 10, 2010. Archived from the original on October 22, 2014 . Retrieved October 21, 2014.

Heller, Jill (September 30, 2013). "Katy Perry Contemplated Suicide After Divorcing Russell Brand, Says Split Was A 'Dark Time' ". International Business Times. Archived from the original on August 12, 2014 . Retrieved August 7, 2014. Women Who Defined the Decade in Pop Culture". Glamour. December 20, 2019 . Retrieved November 21, 2021. Leopold, Todd (September 30, 2015). "Katy Perry kissed by a girl– too much". CNN. Archived from the original on October 27, 2015 . Retrieved October 25, 2015. Katy Perry's 'California Dreams' Tour: What the Critics Are Saying". The Hollywood Reporter. June 19, 2011. Archived from the original on September 8, 2014 . Retrieved August 6, 2014. Rowley, Glenn (October 16, 2019). "Katy Perry Goes On a Tropical Joyride in 'Harleys in Hawaii' Video: Watch". Billboard . Retrieved October 17, 2019.Curto, Justin (December 21, 2020). "Zooey Deschanel Plays Katy Perry in Music Video, Culminating a 13-Year-Old Joke". Vulture . Retrieved December 22, 2020. Bell, Amanda (October 14, 2015). " 'Katy Perry Pop': First Look At Her App". MTV News. Archived from the original on October 15, 2015 . Retrieved October 14, 2015.