Rove vs. Novak: Who's lying

So which one of these icons of the right is lying?

Robert Novak, as reported in Newsday, July 21, 2003:

Novak, in an interview, said his sources had come to him with the information. "I didn't dig it out, it was given to me," he said. "They thought it was significant, they gave me the name and I used it."

Wilson and others said such a disclosure would be a violation of the law by the officials, not the columnist.

Novak reported that his "two senior administration officials" told him that it was Plame who suggested sending her husband, Wilson, to Niger.

Karl Rove, as reported in the L.A. Times, today:

White House senior advisor Karl Rove reportedly has told federal investigators that it was a newspaper columnist, rather than official sources, who told him the name of a covert CIA operative whose identity was later revealed in the media, touching off a criminal inquiry.

Rove, a White House deputy chief of staff, told investigators that syndicated columnist Robert Novak gave him the name of the operative, Valerie Plame, a person familiar with his testimony said Friday.

So which one of them is lying? Or is NEITHER of them lying, in which case there are two OTHER White House sources for the information to Novak. So who are they?