APA (7th ed.) Citation

Blatty, W. P. (2011). The exorcist: A novel (40th Anniversary.).

Chicago Style (17th ed.) Citation

Blatty, William Peter. The Exorcist: A Novel. 40th Anniversary. 2011.

MLA (8th ed.) Citation

Blatty, William Peter. The Exorcist: A Novel. 40th Anniversary. 2011.

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