Westman, Karin E. (2004). "Specters of Thatcherism". In Whited, Lana A. (ed.). The ivory tower and Harry Potter. University of Missouri Press. pp. 306–308. ISBN978-0-8262-1549-9. Archived from the original on 16 March 2023. Retrieved 15 May 2009.
Brown, Stephen (2002). "Marketing for Muggles: The Harry Potter way to higher profits". Business Horizons. 45 (1): 6–14. doi:10.1016/S0007-6813(02)80004-0.
Knapp, N.F. (2003). "In Defense of Harry Potter: An Apologia"(PDF). School Libraries Worldwide. 9 (1). International Association of School Librarianship: 78–91. Archived from the original(PDF) on 9 March 2011. Retrieved 14 May 2009.
Dammann, Guy (18 June 2008). "Harry Potter breaks 400m in sales". London: Guardian News and Media Limited. Archived from the original on 31 October 2013. Retrieved 17 October 2008.
Cassy, John (16 January 2003). "Harry Potter and the hottest day of summer". The Guardian. London: Guardian News and Media Limited. Archived from the original on 31 December 2013. Retrieved 27 September 2008.
Knapp, N.F. (2003). "In Defense of Harry Potter: An Apologia"(PDF). School Libraries Worldwide. 9 (1). International Association of School Librarianship: 78–91. Archived from the original(PDF) on 9 March 2011. Retrieved 14 May 2009.
Dammann, Guy (18 June 2008). "Harry Potter breaks 400m in sales". London: Guardian News and Media Limited. Archived from the original on 31 October 2013. Retrieved 17 October 2008.
Westman, Karin E. (2004). "Specters of Thatcherism". In Whited, Lana A. (ed.). The ivory tower and Harry Potter. University of Missouri Press. pp. 306–308. ISBN978-0-8262-1549-9. Archived from the original on 16 March 2023. Retrieved 15 May 2009.
Cassy, John (16 January 2003). "Harry Potter and the hottest day of summer". The Guardian. London: Guardian News and Media Limited. Archived from the original on 31 December 2013. Retrieved 27 September 2008.