I agree with the thrust of this reply that best-promoting e book is the greater term. @J.R. If anything is often a New York Instances Best Seller, The complete 5 phrase string is the adjective in use to switch e book, While why book is specified is further than me; https://johnnyqwvgs.bloggerchest.com/36504013/helping-the-others-realize-the-advantages-of-divorce-lawyer-in-dha-karachi-pakistan