Cita APA

Sagan, C. 1. (1978). The Dragons of Eden: Speculations on the evolution of human intelligence (First Ballantine Books Edition.). New York: Ballantine Books.

Citación estilo Chicago

Sagan, Carl 1934-1996. The Dragons of Eden: Speculations On the Evolution of Human Intelligence. First Ballantine Books Edition. New York: Ballantine Books, 1978.

Cita MLA

Sagan, Carl 1934-1996. The Dragons of Eden: Speculations On the Evolution of Human Intelligence. First Ballantine Books Edition. New York: Ballantine Books, 1978.