APA (7th ed.) Citation

Niven, L., & Lerner, E. M. (2012). Fate of worlds: Return from the Ringworld. Tor.

Chicago Style (17th ed.) Citation

Niven, Larry, and Edward M. Lerner. Fate of Worlds: Return from the Ringworld. New York: Tor, 2012.

MLA (8th ed.) Citation

Niven, Larry, and Edward M. Lerner. Fate of Worlds: Return from the Ringworld. Tor, 2012.

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