APA (7th ed.) Citation

Simon, F. (2006). Horrid Henry's Evil Enemies. Orion Children's Books.

Chicago Style (17th ed.) Citation

Simon, Francesca. Horrid Henry's Evil Enemies. Britain: Orion Children's Books, 2006.

MLA (9th ed.) Citation

Simon, Francesca. Horrid Henry's Evil Enemies. Orion Children's Books, 2006.

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