No study material is not sufficient for CA final you should have reference to some good books for reference.
Some books are:
Account : Vijay Kumar SFM: A N Shridhar Audit: Padhuka for Company Audit and Professional Ethic Surbhi Bansal & Amit Tiwari for SA Law: Munish Bhandari
Direct Tax: Vinaod Gupta Indirect Tax: Bangar ISCA Module
Advance Management Accounts Book: J B Gupta or P C Tulisan.
15 November 2013
Dear Sonia it depends on your ability read the cluttered study material ICAI provides.
Honestly, it can be sufficient. But it requires more time. Therefore people refer to additional reference material.
In my view, study material coupled with practice manual, RTP and suggested answer are sufficient. However, you must refer to other books for practical questions in subjects like accounts, costing, fm etc