Hillary Rodham Clinton has written a new book. Except maybe she hasn’t. It all depends on what the definition of “written” is.

The former first lady, U.S. senator and secretary of state had some help on her new memoir, “Hard Choices.” Clinton employed a phalanx of aides and associates in producing the volume, which is being released Tuesday.

But don’t expect to hear much about Clinton’s “book team,” as she calls those who helped her write the book, which carries her name alone on its cover.

Clinton’s acknowledgment of her three-man team — Dan Schwerin, a former Senate and State Department aide to Clinton; Ethan Gelber, another State Department aide; and Ted Widmer, a Clinton adviser and Brown University historian — appears in just a few sentences on Page 597 of the 635-page book. Their exact contributions, however, aren’t spelled out.

Such is the lot of the ghostwriter...