There is one book giving extremely good coverage of the entire South Georgia operation - in fact it is one of the best books on the 1982 conflict.
Operation Paraquat by Roger Perkins
It has been out of print for some time, but can still be found.
If anyone is really stuck and wants this one - it can be obtained from either of the above sellers.
There is also some coverage of this in:
Beyond Endurance by Captain Nick Parker
There is also some coverage in Peter Ratcliffe's Eye of the storm.
Any queries, shoot me a PM.