House Speaker Nancy Pelosi (D-Calif.) laid into “the Squad” when discussing the group of House progressives to author Susan Page, whose book “Madam Speaker: Nancy Pelosi and the Lessons of Power” hits store shelves next week.

In Monday’s Axios report on some tidbits from the biography, the top House Democrat during one instance adopted a child-like voice when discussing the Squad and its figurehead, self-described democratic socialist Rep. Alexandria Ocasio-Cortez (D-N.Y.).

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“You’re not a one-person show. This is the Congress of the United States,” Pelosi said in some blunt advice to the progressive clique, in the book.

Page, USA Today‘s Washington D.C. bureau chief, conducted 10 interviews with Pelosi for the biography that’s coming out on Tuesday, April 20, according to a lengthy, adapted excerpt from the book published Friday on the newspaper’s website.

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Pelosi asked friends and family to partake in the process too, with Page having interviewed more than 150 other friends, family members, political allies and adversaries for the biography.

In Page’s second meeting with Pelosi—sometime in July 2019—the author said that Pelosi’s dispute with the Squad had “exploded” and that “her anger at the four new progressive congresswomen was palpable.” This meeting would have occurred a little over six months after all four founding Squad members—Reps. Ilhan Omar (Minn.), Rashida Tlaib (Mich.), Ayanna Pressley (Mass.), and Ocasio-Cortez—took office for the first time.

Pelosi held a meeting with Ocasio-Cortez later that month in order to reduce tensions, according to The Daily Mail.

In the book, Pelosi also discussed former President Donald Trump, Senate Minority Leader Mitch McConnell (R-Ky.), and others.

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You can follow Douglas Braff on Twitter @DouglasPBraff.