APA (7th ed.) Citation

Westerfeld, S. (2003). The killing of worlds. Tor.

Chicago Style (17th ed.) Citation

Westerfeld, Scott. The Killing of Worlds. New York: Tor, 2003.

MLA (9th ed.) Citation

Westerfeld, Scott. The Killing of Worlds. Tor, 2003.

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