Cita APA (7a ed.)

Sagan, C. (2013). Cosmos (Ballantine Books Trade Paperbacks edition, 2013.). Ballantine.

Cita Chicago Style (17a ed.)

Sagan, Carl. Cosmos. Ballantine Books Trade Paperbacks edition, 2013. New York: Ballantine, 2013.

Cita MLA (8a ed.)

Sagan, Carl. Cosmos. Ballantine Books Trade Paperbacks edition, 2013. Ballantine, 2013.

Precaución: Estas citas no son 100% exactas.