APA (7th ed.) Citation

Riordan, R. (2010). The Red Pyramid. Hyperion Books.

Chicago Style (17th ed.) Citation

Riordan, Rick. The Red Pyramid. Great Britain: Hyperion Books, 2010.

MLA (9th ed.) Citation

Riordan, Rick. The Red Pyramid. Hyperion Books, 2010.

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