APA (7th ed.) Citation

(2009). Horrid Henry's underpants / Francesca Simon ; illustrated by Tony Ross.

Chicago Style (17th ed.) Citation

Horrid Henry's Underpants / Francesca Simon ; Illustrated by Tony Ross. 2009.

MLA (9th ed.) Citation

Horrid Henry's Underpants / Francesca Simon ; Illustrated by Tony Ross. 2009.

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