- J.K. Rowling. Harry Potter and the Goblet of Fire. London: Bloomsbury, 2000.
- J.K. Rowling. Harry Potter and the Philosopher's Stone. London: Bloomsbury, 1997.
- J.K. Rowling. Harry Potter and the Deathly Hallows. London: Bloomsbury, 2007.
- J.K. Rowling. Harry Potter and Order of the Phoenix . London: Bloomsbury, 2005.
- J.K. Rowling. Harry Potter and the Chamber of Secrets. London: Bloomsbury, 1998.
- Nash Information Services. "Box Office History for Harry Potter Movies." Dec 31, 2016. March 20, 2017. <http://www.the-numbers.com/movies/franchise/Harry-Potter#tab=summary>.
- Warner Brothers Entertainment . "Harry Potter and the Cursed Child." 2016. March 20, 2017. <https://www.harrypottertheplay.com>.
- MICHIKO KAKUTAN. "Review: ‘Harry Potter and the Cursed Child’ Explores the Power of Time." August 1, 2016. March 19, 2017. <https://www.nytimes.com/2016/08/02/books/harry-potter-and-the-cursed-child-review.html>.