I’ve got
1. PMP Project Management Professional Study Guide by Joseph Phillips
2. Pmbok – Pmp Exam Prep (5Th Ed , 2005) by Rita Mulcahy,
3. Preparing for the Project Management Professional (PMP)Certification Exam by Michael Newell.

are they worth to read? which one do you suggest?

Rita Mulcahy’s PMP Exam Prep might be very well worth to work through. Please check her web site for the newest edition: http://www.rmcproject.com.
I worked through that book as well when I prepared my own PMP Exam and it helped me to pass.