There are several books available in the market that can be helpful for preparing for PPSC (Punjab Public Service Commission) exams. The choice of the best book may vary depending on the specific exam, subject, and individual preferences. Here are some popular books that candidates often refer to for PPSC exam preparation:

1. "PMS/PPSC Combined Competitive Examination" by Chaudhary Muhammad Sohail Anwar
2. "PPSC Guide Plus" by Dogar Brothers
3. "PPSC Guide for One Paper MCQs" by Mian Shafiq & Mian Rizwan
4. "PMS Punjab Public Service Commission Examination" by Aamer Shehzad
5. "General Knowledge & Current Affairs for PPSC Exams" by Raja Zahid Hussain
6. "PMS Complete Guide" by Imtiaz Shahid
7. "PMS Past Papers (Solved)" by M. Imtiaz Shahid
8. "PMS General Knowledge" by Imtiaz Shahid