APA (7th ed.) Citation

Francesca Simon & Ross , T. (2011). Horrid Henry and the Zombie Vampire. Orion Children's Books.

Chicago Style (17th ed.) Citation

Francesca Simon and Tony Ross. Horrid Henry and the Zombie Vampire. London: Orion Children's Books, 2011.

MLA (9th ed.) Citation

Francesca Simon and Tony Ross. Horrid Henry and the Zombie Vampire. Orion Children's Books, 2011.

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