Gaya APA

Riordan, Rick. (2012). The Heroes of Olympus : The Mark of Athena (III). USA: Disney Hyperion.

Gaya Chicago

Riordan, Rick. The Heroes of Olympus : The Mark of Athena. III USA: Disney Hyperion, 2012. .

Gaya MLA

Riordan, Rick. The Heroes of Olympus : The Mark of Athena. III USA: Disney Hyperion, 2012. .

Gaya Turabian

Riordan, Rick. The Heroes of Olympus : The Mark of Athena. III USA: Disney Hyperion, 2012. .