The best books for PSIR are as follows:-
1. Rau’s IAS Mains Compass for PSIR
2.D.D. Basu: Indian Constitution.
3.P.M. Bakshi: Indian Constitution
4.S.C. Kashyap: Citizens and the Constitution (Publications Division)
5.B.S. Baviskar & Ash Narain Roy Local Governance – A Global Perspective (Publications Division)
6.S.C. Kashyap: Our Parliament (NBT)
7.S.C. Kashyap: Our Constitution (NBT)
8.S.C. Kashyap: Our Political System (NBT)
9.M.R. Singh: Indian Federalism (NBT)
10.Kuldeep Mathur: From Government to Governance (NBT)
11.Rajiv Sikri: Challenge and Strategy- Understanding India’s foreign policy
12.C. Rajamohan: Crossing the Rubicon
13.NCERT : Contemporary World Politics (12th Standard)