Best book on Watergate was G. Gordon Liddy’s. There is as much myth perped by Demrats on that ‘job’; as there is, in all their opaque ‘transparencies’ and creative ‘rewrites’ in their ugly political history - where it meets their opposition.
Liddy never wrote a definitive Watergate book.
The books that Liddy endorses as factual are "Secret Agenda” by Jim Hougan and “Silent Coup” by Len Colodny and Robert Gettlin. Read both books to understand the correct Watergate history.