Ms Manigault Newman added that Mr Trump "loved conflict, chaos and confusion.loved seeing people argue or fight" and had behaved "like a dog off a leash" at events he had attended without his wife.
According to the Guardian website, which says it obtained a copy of Manigault Newman's memoir prior to its August 14 publication date, the former Apprentice contestant and later White House communications staffer writes in Unhinged that while she did not personally hear Trump use the N-word she cites three sources who described the contents of the tape.
Manigault Newman was a contestant on Trump's "The Apprentice" reality show and later served as a senior adviser to the president.
Ms Manigault Newman also claimed that the president tried to buy her silence when she left the White House in January.
As details of the book have emerged ahead of its release next week, White House Press Secretary Sarah Sanders issued a scathing statement calling Manigault Newman a "disgruntled former White House staffer" whose book is "riddled with lies and false accusations".
In the book, Manigault Newman makes the stunning accusation that she was offered - and refused - a $15,000-per-month contract from Trump's campaign to remain silent after her unceremonious dismissal last December, according to excerpts obtained by the Washington Post.More news: Manchester United transfer woes summed up by Gary Neville's old tweet
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"It's sad that a disgruntled former White House employee is trying to profit off these false attacks, and even worse that the media would now give her a platform". The Associated Press purchased an early copy of the memoir, which the White House has already slammed as "riddled with lies and false accusations". "Other aides say they have not seen a tanning bed in the White House".
Another White House official confirmed that Manigault Newman brought Cohen into the White House and was later rebuked for it.
After Manigault Newman confided her desire to hear the N-word tape to then-White House communications director Hope Hicks, the Unhinged author writes that Hicks then told chief of staff John Kelly that Manigualt Newman was "close to getting her hands on the tape", leading to her termination.
"I saw him put a note in his mouth". "He hated him. He never explained why, but now I believe it was because Obama was black". "Very shoddy work", Luntz wrote.
It's one of a long list of scandalous claims contained in her new book, "Unhinged", which is set to come out August 14.