I want to give the exam of Indian Police Service and for that I want to get the list of some of the best Indian Police Service exam reference books so can you provide me that?

As you want to get the list of some of the best Indian Police Service exam reference books so here is the information of the same for you:

The Pearson CSAT Manual 2013: Civil Services Aptitude Test for the UPSC Civil Services Preliminary Examination
by
Edgar Thorpe, Showick Thorpe
Publisher: Pearson

CSAT: Interpersonal, Communication, Problem Solving and Decision Making Skills (Paper 2)
by
Shalini Verma
Publisher: Pearson

CSAT Conceptual Approach (Paper - 2
by
P. N. Roy Chowdhury
Publisher: Pearson

UPSC Portal CSAT Comprehensive Manual: IAS Preliminary Examination 2013 (Paper - 2)
by
Sachchida Nand Jha
Publisher: UPSC Portal

How to Tackle Civil Services Prelim. Exam. (Paper I- GS, Paper II- CSAT) with 10 yrs. Solved Papers of General Studies (Preliminary)
by
By Student Aid Publication
Publisher: Student Aid Publications (2012)

UPSC Portal CSAT General Studies Manual: IAS Preliminary Examination 2013 (Paper - 1)
by
Jha, Jha
Publisher: UPSC Portal

CSAT Civil Services Aptitude Test: UPSC Priliminary Exam for IAS / IPS & others
by
Chandresh Agrawal
Publisher: Priynka Prakashan (2012)