APA (7th ed.) Citation

Rowling, J. K., & GrandPre, M. (1999). Harry Potter and the prisoner of Azkaban. Scholastic.

Chicago Style (17th ed.) Citation

Rowling, J. K., and Mary GrandPre. Harry Potter and the Prisoner of Azkaban. New York: Scholastic, 1999.

MLA (9th ed.) Citation

Rowling, J. K., and Mary GrandPre. Harry Potter and the Prisoner of Azkaban. Scholastic, 1999.

Warning: These citations may not always be 100% accurate.