APA (7th ed.) Citation

Riordan, R. (2017). The sword of summer (First paperback edition.). Disney Hyperion.

Chicago Style (17th ed.) Citation

Riordan, Rick. The Sword of Summer. First paperback edition. Los Angeles: Disney Hyperion, 2017.

MLA (8th ed.) Citation

Riordan, Rick. The Sword of Summer. First paperback edition. Disney Hyperion, 2017.

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