- Morgenstern, Erin. The Night Circus. New York: Anchor Books, 2011.
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Flaherty, Jennifer. "Dreamers and Insomniacs: Audiences in "Sleep No More" and "The Night Circus"." Comparative Drama 48, no. 1/2 (2014): 135-54.
- "not really a FAQ." Internet Archive. 1/31/19. <https://web.archive.org/web/20120609115510/http://erinmorgenstern.com/about/not-really-a-faq/>.
- "The Marvels And Messes Of A Month Of Writing." NPR. 1/31/19. <https://www.npr.org/2011/12/02/143048102/the-marvels-and-messes-of-a-month-of-writing>.
- "Erin Morgenstern: “The Night Circus”." NPR. 1/31/19. <https://dianerehm.org/shows/2011-09-22/erin-morgenstern-night-circus>.
- "Circus." Britannica. 2/17/19. <https://www.britannica.com/art/circus-theatrical-entertainment>.
- "Brief History of Circus." University of Sheffield. 2/17/19. <https://www.sheffield.ac.uk/nfca/researchandarticles/circushistory>.
- "Short History of the Circus." Circopedia. 2/18/19. <http://www.circopedia.org/SHORT_HISTORY_OF_THE_CIRCUS>.
- Grassi, Laurie. "Q and A with The Night Circus’s Erin Morgenstern." Chatelaine. 2/27/19. <https://www.chatelaine.com/living/books/qa-with-the-night-circuss-erin-morgenstern/>.
- " Interview with Erin Morgenstern ." Goodreads. 2/27/19. <https://www.goodreads.com/interviews/show/639.Erin_Morgenstern>.
- " Erin Morgenstern: The Powells.com Interview ." Powells. 2/28/19. <https://www.powells.com/post/interviews/erin-morgenstern-the-powellscom-interview>.
- Schnabel, J.L.. "Le Rêveur Parle: An Interview with Erin Morgenstern by J.L. Schnabel." Haute Macabre. 2/28/19. <http://hautemacabre.com/2017/03/le-reveur-parle-an-interview-with-erin-morgenstern-by-jl-schnabel/>.
- "Erin Morgenstern." Bookpage. 2/28/19. <https://bookpage.com/interviews/8731-erin-morgenstern-fiction#.XHi-eNF7l0s>.