APA (7th ed.) Citation

Riordan,Rick. (2015). Heroes of Olympus: The House of Hedes. Puffin Books.

Chicago Style (17th ed.) Citation

Riordan,Rick. Heroes of Olympus: The House of Hedes. UK: Puffin Books, 2015.

MLA (9th ed.) Citation

Riordan,Rick. Heroes of Olympus: The House of Hedes. Puffin Books, 2015.

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