Here as per your demand I am suggesting you some books of IBPS PO as per different sections:

A. Reasoning:
A Modern Approach To Verbal & Non-Verbal Reasoning Revised Edition : Author: R. S. Aggarwal ,Publisher: S.Chand Publishing

B. English Language: (Any one ) Authors :
1 wren and Martin
2. A.k Kapoor
3. hari Mohan Prasad

C. Quantitative Aptitude:
1. Quantitative Aptitude For Competitive Examinations 17th Edition,
Author: R. S. Aggarwal Publisher: S. Chand Publishing
or
2. Quantitative Aptitude Test for Bank P.O ,
Author: N. K. Singh Publisher: Upkar Prakashan

D. General Awareness:
1. Guide to Banking General Awareness and Banking Aptitude Test.
Author: RPH Editorial Board
Publisher: Ramesh Publishing House
or
2. Author : Manohar Pandey , Publisher : Arihant publications
or
3. Upkar publications
4. BSC Publications

E. Computer Knowledge:
Authors : Dr. Alok kumar or R.Pillai