APA (7th ed.) Citation

Niven, L., & Gardner, G. (2005). Ringworld (Unabridged.). Blackstone Audio, Inc., and Buck 50 Productions, LLC.

Chicago Style (17th ed.) Citation

Niven, Larry, and Grover Gardner. Ringworld. Unabridged. Ashland: Blackstone Audio, Inc., and Buck 50 Productions, LLC, 2005.

MLA (8th ed.) Citation

Niven, Larry, and Grover Gardner. Ringworld. Unabridged. Blackstone Audio, Inc., and Buck 50 Productions, LLC, 2005.

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