APA (7th ed.) Citation

J.K.Rowling. (1997). Harry Potter And The Philosopher's Stone. Bloombury Publishing Plc..

Chicago Style (17th ed.) Citation

J.K.Rowling. Harry Potter And The Philosopher's Stone. London: Bloombury Publishing Plc., 1997.

MLA (9th ed.) Citation

J.K.Rowling. Harry Potter And The Philosopher's Stone. Bloombury Publishing Plc., 1997.

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