Top positive review
6 people found this helpful
If you buy this digitally there is a license which expires after a finite period of time.
on 19 May 2015
I like the book and it has been useful guide for my studies. However, this review is more about buying this book digitally off Amazon. I purchased the book two years ago and have just tried to download it on a new phone. The license has expired which does not allow me to download it. Therefore money I spent to BUY this book has been lost and now I need to buy it again. I would recommend you buy it in paper back so this does not happen to you!