Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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

Precaución: Estas citas no son 100% exactas.