A book establishes credibility through several factors. First, the author's expertise and reputation in the subject matter contribute to a book's credibility. This includes their qualifications, experience, and prior contributions to the field. Second, the use of well-researched, accurate, and up-to-date information and data supports the book's arguments and assertions. Third, a book gains credibility by being published by a reputable publisher, which typically involves a rigorous vetting and editing process. Peer reviews, endorsements from respected figures in the field, and positive responses from readers can further enhance a book's credibility. Last, an aim, balanced, and thorough exploration of the topic, rather than a one-sided perspective, also adds to a book's credibility.