Bob “Woody” Woodward is a known liar whose use of anonymous sources is his phony device of choice. He wrote an infamous tell-all about Reagan former CIA Director Bill Casey and claimed to have interviewed Casey on his death bed in the hospital. BUT, I happen to know his daughter and son-in-law who unequivocally stated that Woodward was never alone with Bill Casey and, further, at that time he couldn’t even speak. This yarn was spun to damage President Reagan. Didn’t work then, won’t work now.
He is the father of phony RAPorting as he obnoxiously and incorrectly pronounces what he supposedly does for a living!
Its obvious that Nixon was railroaded.
So, Woodward's source for that is an unwitnessed, unrecorded conversation between himself and someone who is dead.
How much more verification do you need?