In reply to Ned:
If you want just 1 guidebook then SMC Scottish Rock climbs has a limited selection the best routes from those areas. plenty to go at in there for a couple of trips.
More comprehensive options would be:
Gary Latters Scottish Rock (Vol 1 for Arran, Glen Coe. Vol 2 for Skye)
SMC guides:
Skye: The Cullin
Skye Outcrops
Glen Coe
Arran and the Inner Hebrides
