There are two excellent introductory guides to the history of registration in Scotland and in England.
Cecil Sinclair, Jock Tamson's Bairns: A History of the Records of the General Register Office for Scotland (Edinburgh, 2000).
Edward Higgs, Life, Death and Statistics: Civil Registration, Censuses and the Work of the General Register Office, 1836-1952 (Hatfield, 2004).
Costs £12.50 if ordered direct from Local Population Studies (inquiries to firstname.lastname@example.org)
On Scottish Genealogy
Bruce Durie, Scottish Genealogy (Stroud, 2009)
For those requiring a more detailed list of works relating to registration and associated demographic issues for Scotland and England, a pdf. file is available: Select Bibliography