As you want to get the list of some of the best Public Sector Units entrance exams reference books so here is the information of the same for you:

Objective Computer Knowledge & Literacy (Paperback) by Kiran Prakashan

ONGC Mechanical Assistant Executive Engineer Recruitment Examination 1st Edition (Paperback) by GKP

ONGC Electronics Assistant Executive Engineer - Recruitment Examination 1st Edition (Paperback) by GKP

ONGC - Officer Recruitment Examination - Finance & Accounts 3rd Edition (Paperback) by GKP

ONGC Human Resource HR (Executive) Recruitment Examination 1st Edition (Paperback) by GKP

Quick Review In Objective Applied Geology PB 1st Edition (Paperback) by R K Bopche

Practice Book for PSUs: Electronics Engineering (Paperback) by ME Team

ONGC Electrical Assistant Executive Engineer Recruitment Examination 1st Edition (Paperback) by GKP

Handbook Series of Electrical Engineering (Paperback) by Arihant Experts

Computer Science and IT : Crack GATE / IES / PSUs and Other Competitive Exams (Paperback) by Expert Compilations

ONGC Civil Assistant Executive Engineer - Recruitment Examination 1st Edition (Paperback) by GKP

ONGC Instrumentation Assistant Executive Engineer - Recruitment Examination 1st Edition (Paperback) by GKP

Hand Book of Civil Engineering by RPH Editorial Board-English-Ramesh Publishing House-Paperback (Paperback) by RPH Editorial Board

Practice Book for PSUs: Computer Science and IT (Paperback) by ME Team

ONGC Production Assistant Executive Engineer Recruitment Examination 6th Edition (Paperback) by GKP

Hand Book of Electronics and Communication Engineering (Paperback) by RPH Editorial Board

Objective Civil Engineering (Paperback) by R Gupta

Practice Book for PSUs: Electrical Engineering by ME Team

PSUs Public Sector Examinations: General Studies for U.P.S.C, Public Sector and Other Competitive Examinations 3rd Edition (Paperback) by G.K.P

M. Sc. Biotechnology Entrance Exam OBJECTIVES 01 Edition (Paperback) by P. Kumar

P. Series-1 Bhartiya Arthvyavastha (Paperback, Hindi) by Pratiyogita Darpan (2012)

Fundamental Laws of Mechanics by Irodov

BSNL Junior Telecom Officer (JTO) Guide 1st Edition (Paperback) by RPH Editorial Board

Commerce Multiple Choice Questions (Paperback) by M N Arora

NTPC/NHPC/IOC/HP Mechanical Engineering Guide 01 Edition (Paperback) by RPH Editorial Board

Public Sector Electrical Engineering Guide 5th Edition (Paperback) by gkp

Gateway To DRDO (Paperback) by Upkar Prakashan

Gateway To PSUs : Electronics & Telecom, Electronics & Communication, Electrical, Electronics & Instrumentation 2nd Edition (Paperback) by Ashish Dixit

Objective Computer Science & Information Technology 1st Edition (Paperback) by G. K. Mitthal, P. K. Bansal

Popular Master Guide - Civil Engineers (NTPC/DRDO/RITES/NHPC/IOC/HP/HAL - Recruitment Exam) 1st Edition (Paperback) by RPH Editorial Board

NTPC/NHPC/IOC/HP Electrical Engineering Guide 01 Edition (Paperback) by RPH Editorial Board

BSNL-Junior Accounts Officer (JAO) 1st Edition (Paperback) by RPH Editorial Board