APA (7th ed.) Citation

Riordan, R. (2012). The mark of Athena. Disney Hyperion Books.

Chicago Style (17th ed.) Citation

Riordan, Rick. The Mark of Athena. New York: Disney Hyperion Books, 2012.

MLA (8th ed.) Citation

Riordan, Rick. The Mark of Athena. Disney Hyperion Books, 2012.

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