APA Style

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

Chicago Style

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

MLA Style

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

Turabian Style

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