If you only have time for two: Make it these two
Voddie Baucham – The Supremacy of Christ in Truth for a Postmodern World
and
Tim Keller – The Supremacy of Christ and the Gospel in a Postmodern World
If you can fit in a third make it this one:
John Piper – The Supremacy of Christ and Joy in a Postmodern World
Then the others are good too. But the first two are key…