APA (7th ed.) Citation

Riordan, R. (2015). Heroes of Olympus: The lost Hero. Puffin Books.

Chicago Style (17th ed.) Citation

Riordan, Rick. Heroes of Olympus: The Lost Hero. UK: Puffin Books, 2015.

MLA (9th ed.) Citation

Riordan, Rick. Heroes of Olympus: The Lost Hero. Puffin Books, 2015.