President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE on Saturday promoted a book detailing his presidential campaign by his former campaign manager and deputy campaign manager.

"Congratulations to two great and hardworking guys, Corey Lewandowski and David Bossie, on the success of their just out book, 'Let Trump Be Trump.' Finally people with real knowledge are writing about our wonderful and exciting campaign!" the president tweeted.

Congratulations to two great and hardworking guys, Corey Lewandowski and David Bossie, on the success of their just out book, “Let Trump Be Trump.” Finally people with real knowledge are writing about our wonderful and exciting campaign! — Donald J. Trump (@realDonaldTrump) December 16, 2017

The president's congratulatory remarks come as Lewandowski and Bossie promote the book, which was released on Dec. 3.

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The book contains various events and anecdotes about their experience working on the campaign.

It discusses Trump's relationship with his former campaign chairman Paul Manafort, including a phone call in which Manafort told Trump that he should stop doing television appearances, which reportedly infuriated Trump.

Lewandowski and Bossie also revealed that then-campaign press secretary Hope Hicks Hope Charlotte HicksSenate intel leaders said Trump associates may have presented misleading testimony during Russia probe: report Cuomo turned down Trump invitation to participate in April press briefing: report Trump shakes up White House communications team MORE was in charge of steaming Trump's suits and that Trump would yell at Hicks to "get the machine!"