APA (7th ed.) Citation

Horowitz, A. (2008). Groosham Grange. Philomel Books.

Chicago Style (17th ed.) Citation

Horowitz, Anthony. Groosham Grange. New York: Philomel Books, 2008.

MLA (8th ed.) Citation

Horowitz, Anthony. Groosham Grange. Philomel Books, 2008.

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