APA Citation

Riordan, R. (2010). Heroes of olympus: The lost hero. London: Puffin Books.

Chicago Style Citation

Riordan, Rick. Heroes of Olympus: The Lost Hero. London: Puffin Books, 2010.

MLA Citation

Riordan, Rick. Heroes of Olympus: The Lost Hero. London: Puffin Books, 2010.

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