Book Publishers refers to companies or organizations that produce and distribute books. They are responsible for editing, designing, printing, marketing, and selling books in various formats such as hardcover, paperback, e-books, audiobooks among others. Book publishers work with authors to develop their manuscripts into finished products, taking care of the production process from start to finish. In exchange for the author's rights to their content, book publishers provide them with an advance payment and royalties on each copy sold. Some well-known book publishers include Penguin Random House, HarperCollins Publishers, Simon & Schuster, Hachette Book Group among others.