Veteran journalist Bob Woodward said Sunday morning that people needed to "wake up" to what's going on in the White House.

"People better wake up to what's going on," Woodward, whose new book describes a White House in turmoil, told "CBS Sunday Morning."

"You look at the operation of this White House and you have to say, 'Let's hope to God we don't have a crisis.'"

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Excerpts of Woodward's upcoming book, "Fear: Trump in the White House," have been published, drawing criticism from President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE and others.

In remarks Friday, the president called Woodward an "idiot" and his book "all fiction."

White House press secretary Sarah Huckabee Sanders also disparaged the book in a statement Tuesday, calling it "nothing more than fabricated stories, many by former disgruntled employees, told to make the president look bad."

Woodward denied Sunday morning that he had spoken primarily to people who had a score to settle with the president.

"My reporting is meticulous and careful," Woodward added.