Auditing book for ca final

Hello,

My Attempt is in November 2014. I Dont have any reference Book for Studying Audit. I'm planning to go for Surbhi Bansals Book.

9th Edition (Feb.2014) of this Book is Available in the Market which doesnt contain amendments of Companies Act 2013. 

Should I purchase this Book or wait for the 10th Edition to come? When it'll be available to Purchase, any idea?

Thanks..