APA (7th ed.) Citation

Card, O. S., Johnston, A., Rudnicki, S., Hoye, S., & Morey, A. (2013). Earth Afire. Macmillan Audio.

Chicago Style (17th ed.) Citation

Card, Orson Scott, Aaron Johnston, Stefan Rudnicki, Stephen Hoye, and Arthur Morey. Earth Afire. New York, NY: Macmillan Audio, 2013.

MLA (8th ed.) Citation

Card, Orson Scott, et al. Earth Afire. Macmillan Audio, 2013.

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