APA (7th ed.) Citation

Riordan, R. (2009). Percy Jackson: And the last Olympian. Puffin Books.

Chicago Style (17th ed.) Citation

Riordan, Rick. Percy Jackson: And the Last Olympian. London: Puffin Books, 2009.

MLA (9th ed.) Citation

Riordan, Rick. Percy Jackson: And the Last Olympian. Puffin Books, 2009.

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