Khamelion
Tour Winner
Bring me the head of Sergio Garcia was a good read
A Good Walk Spoiled and The Majors by John Feinstein. Both old books but excellent reads. He also wrote Monet of Glory which isn't quite as good but still a decent read.
I also enjoyed A Course called Ireland by Tom Coyne.
An American Caddie in St Andrews
Ian Poulters autobiography
They're both great reads. Currently reading Bring me the head of Sergio Garcia and it's pretty funny.
I liked golf on the rocks by Gary Sutherland
...Four Iron In The Soul...
Thumbs up to this one. It was written some time in the 90s so things may have changed since, but it really opened my eyes to how hard life as a caddie can be.