The Varieties of Scientific Experience
Carl Sagan
UFO's: A Scientific Debate
Carl Sagan & Thornton Page (eds.)
Shadows of Forgotten Ancestors
A Path Where No Man Thought
Carl Sagan & Richard Turco
Pale Blue Dot
Other Worlds
Murmurs of Earth
Intelligent Life in the Universe
S. Shklovskii & Carl Sagan
The Dragons of Eden
The Demon-Haunted World
Cosmos
Cosmic Connection: An Extraterrestrial Perspective [1973, 1975]
Contact
Comet, Revised
Broca's Brain
Billions & Billions