Novak Got Plame's Name from Wilson

Indirectly from a reference book, according to Robert Novak:

Following my interview with the primary source, I sought out the second administration official and the CIA spokesman for confirmation. I learned Valerie Plame's name from Joe Wilson's entry in "Who's Who in America."
I considered his wife's role in initiating Wilson's mission, later confirmed by the Senate Intelligence Committee, to be a previously undisclosed part of an important news story. I reported it on that basis.

Though the MSM still blames Karl Rove.