To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzes reviews to verify trustworthiness.
If you are trying to purchase this book for a class and use it on a kindle or the kindle app it does not have any page numbers. So if you need to use in text citations for this book at anytime you wont be able to cite it properly.