Carl Sagan: The Skeptic's Sceptic
This extended review provides some excellent responses to arguments that Sagan used and which keep cropping up today.
Carl Sagan: The Skeptic's Sceptic
4. Religious Experience
The God Who Wasn't There
9. More Failed Accusations
The God Who Wasn't There
3. The Gospels & Paul Criticized
The God Who Wasn't There
6. An Interview with Earl Doherty