Carl Sagan, Ann Druyan-Comet, Revised (1997)
Carl Sagan, Ann Druyan-Shadows of Forgotten Ancestors_A Search for Who we Are (1993)
Carl Sagan-Billions and Billions_Thoughts on Life and Death at the Brink of the Millennium (1998)
Carl Sagan-Billions and Billions_Thoughts on Life and Death at the Brink of the Millennium (1998)
Carl Sagan-Broca's Brain_Reflections on the Romance of Science (1979)
Carl Sagan-Contact (1997)
Carl Sagan-Cosmos (1985)
Carl Sagan-Cosmos (1985)
Carl Sagan-Pale Blue Dot_A Vision of the Human Future in Space (1997)
Carl Sagan-The Burden of Skepticism
Carl Sagan-The Cosmic Connection_An Extraterrestrial Perspective (1975)
Carl Sagan-The Demon Haunted World_Science as a Candle in the Dark (1997)
Carl Sagan-The Dragons of Eden_Speculations on the Evolution of Human Intelligence (1986)
Carl Sagan-The Varieties of Scientific Experience_A Personal View of the Search for God (2007)
Carl Sagan-Wonder and Skepticism