Donald Trump has filed a multibillion-dollar lawsuit against the author and publisher of “TrumpNation: The Art of Being The Donald,” claiming the book knowingly understated the celebrity businessman’s wealth.

A lawyer for Trump filed a complaint in New Jersey Superior Court in Camden on Monday accusing Timothy O’Brien, a New York Times business reporter, of damaging the real estate magnate’s reputation. Time Warner Book Group and Warner Books Inc., which published the 288-page book in October, are named as co-defendants.