Joe McGinnis, no longer a respected, reputable journalist, can't keep his story straight. First he claims supermarket tabloids used him as a source, then later admits he used the National Enquirer as a source.
In other news, none other than Sarah Palin's brother was cited as a source in McGinnis' book, but was never actually spoken to by the author. He's even declared that anything attributed to him by McGinniss was a lie.
It says more than what anyone needs to know about the journalistic integrity of McGinniss' work. More specifically, the lack thereof.