APA (7th ed.) Citation

Riordan,Rick. (2010). Percy Jackson & The Battle of the Labyrinth. Puffin books.

Chicago Style (17th ed.) Citation

Riordan,Rick. Percy Jackson & The Battle of the Labyrinth. UK: Puffin books, 2010.

MLA (9th ed.) Citation

Riordan,Rick. Percy Jackson & The Battle of the Labyrinth. Puffin books, 2010.

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