Adam Smith
Bantam Classics · 2003
For most readers the Bantam Classics edition is the practical choice — the complete, unabridged text (all five books) in one inexpensive volume, with Edwin Cannan's notes. Crucially, it keeps Book V, which many cheap editions quietly drop. This is where I'd start.
Penguin (Skinner) · 1999
Andrew Skinner's Penguin edition has the best scholarly notes — but note it's split into two volumes (Books I–III and Books IV–V), so 'the Penguin Wealth of Nations' is only the first half unless you buy both. Worth it for the depth if you don't mind two books.
Glasgow / Liberty Fund · 1976
The Glasgow Edition (reprinted by Liberty Fund / Oxford) is the definitive scholarly text, in two volumes — the academic reference. More than a general reader needs.
Free (public domain) · 1776
The 1776 text is public domain and free. Complete and free — just confirm any free file includes Book V, which Smith devotes to government, taxation, and defense.
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