APA Edition Citation

Riordan, R. (2010). Heroes of olympus: The lost hero. Penguin books.

Chicago Edition Citation

Riordan, Rick. Heroes of Olympus: The Lost Hero. London: Penguin books, 2010.

MLA Edition Citation

Riordan, Rick. Heroes of Olympus: The Lost Hero. Penguin books, 2010.

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