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