Cita APA (7a ed.)

Kaplan, R. D., & Dufris, W. (2017). Earning the Rockies: How geography shapes America's role in the world (Unabridged.). HighBridge Audio.

Cita Chicago Style (17a ed.)

Kaplan, Robert D., y William Dufris. Earning the Rockies: How Geography Shapes America's Role in the World. Unabridged. Minneapolis, MN: HighBridge Audio, 2017.

Cita MLA (8a ed.)

Kaplan, Robert D., y William Dufris. Earning the Rockies: How Geography Shapes America's Role in the World. Unabridged. HighBridge Audio, 2017.

Precaución: Estas citas no son 100% exactas.