APA (7th ed.) Citation

Card, O. S., & Johnston, A. (2013). Earth Afire (First edition.). Tor.

Chicago Style (17th ed.) Citation

Card, Orson Scott, and Aaron Johnston. Earth Afire. First edition. New York: Tor, 2013.

MLA (8th ed.) Citation

Card, Orson Scott, and Aaron Johnston. Earth Afire. First edition. Tor, 2013.

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