Jenni Rivera memoir to be released in July Jenni Rivera arrives at the Billboard Latin Music Awards 2012 at Bank United Center on April 26, 2012, in Miami, Fla. / Rodrigo Varela/Getty Images Some final words from the late Mexican-American singer and TV star Jenni Rivera will be released this summer. Atria Books announced Monday it's publishing a memoir by the multimillion-selling artist, who died in a plane crash in December at age 43. Jenni Rivera: 1969-2012 "Unbreakable" is scheduled to come out in July. It will come out simultaneously in Spanish. The book has been authorized by Rivera's family. Rivera had been working on "Unbreakable" for several years. Atria says "Unbreakable" will reveal the "heart and soul" of Rivera, a mother of five and grandmother of two known for her frank talk about her life. Rivera was born in Los Angeles and launched her career by selling cassette tapes at flea markets. Known as the "Diva de la Banda," she went on to sell more than 15 million copies of her 12 major-label albums. Atria Books is an imprint of Simon & Schuster, a part of CBS Corporation.