APA (7th ed.) Citation

Niven, L., & Ellis, D. (1970). Ringworld (First edition.). Ballantine Books.

Chicago Style (17th ed.) Citation

Niven, Larry, and Dean Ellis. Ringworld. First edition. New York: Ballantine Books, 1970.

MLA (8th ed.) Citation

Niven, Larry, and Dean Ellis. Ringworld. First edition. Ballantine Books, 1970.

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