I'm Going To Appear For IELTS (ACADEMIC) Test on 11th August, 2007 in Abu Dhabi - United Arab Emirates.

I Would Like To Ask That Which Are The Official Practice Test? Are They:-
-Cambridge IELTS Practice Test 3, 4 and 5; [CAMBRIDGE UNIVERSITY PRESS]

I'm Using Them For Preparing for My IELTS Exam.

And Which One Is The Official Study Guide?
Is Insight into IELTS (PURPLE COVER), Cambridge Publishings!

Please Sought Out Help. I'm Confused, Am I Studying Right.

Please Help.

Yours Sincerely,
Usman Razaq,
DUBAI.