Jensen is good, but may I also speak up for Lewis Spitz' *The
Reformation*? Like Jensen's, it is part of a two-volume Ren/Ref set.
Spitz' text is published by Concordia, and while there is a bit of a
pro-Lutheran bias, it is basically sound for that level. Students
find it very readable. Cameron's *European Reformation* is
wonderful, but well over the heads of undergraduates, at least the
ones I teach.
-Michael F. Graham
Coker College