(QUESTION) While searching for a book I found its Doi but unable to access it.

Sorry I don’t know if there are specific flairs(or tags) to ask question, but here it is. I found this book on SAGE but I am unable to download it through its doi. It redirects me to the sage page of publication. Sci hub is working fine (I guess, I tried other doi too, it works). Is there any reason for this happening. Also is there some other way to download that book.