Hello Aspirant

For BA LLB at PU you can refer the following books and they are as follows

• CLAT and LLB Entrance exam study package ,A.P.Bhardwaj
• The ultimate guide for LLB examination,MA Rashid
• LLB entrance exam guide ,Pankaj Kr Jaiswal
• English legal system Susan Mckenzie
• for current affairs  and verbal Hindu Newspaper
• Logical reasoning  R S aggarwal
• Norman Lewis for vocabulary

I hope this helps

Regards!