APA (7th ed.) Citation

Rowling, J., Thorne, J., & Tiffany, J. (2016). Harry potter and the cursed child. Little Brown.

Chicago Style (17th ed.) Citation

Rowling, J.K, John Thorne, and John Tiffany. Harry Potter and the Cursed Child. Great Britain: Little Brown, 2016.

MLA (9th ed.) Citation

Rowling, J.K, et al. Harry Potter and the Cursed Child. Little Brown, 2016.