APA (7th ed.) Citation

Riordan, R., & Guetig, C. (2015). The sword of summer (Unabridged.). Listening Library, an imprint of the Penguin Random House Audio Publishing Group : Books on Tape.

Chicago Style (17th ed.) Citation

Riordan, Rick, and Christopher Guetig. The Sword of Summer. Unabridged. New York, New York: Listening Library, an imprint of the Penguin Random House Audio Publishing Group : Books on Tape, 2015.

MLA (8th ed.) Citation

Riordan, Rick, and Christopher Guetig. The Sword of Summer. Unabridged. Listening Library, an imprint of the Penguin Random House Audio Publishing Group : Books on Tape, 2015.

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