UPSC

General Studies Paper I

1. General Studies Manual - Paper 1 2018 by Manohar Pandey
2. General Studies Paper I for Civil Services Preliminary Examination 2018 by Majid Husain, D R Khullar, N K Bajaj, N D Arora, Ashok Kumar Singh 
3. General Studies - Paper I For Civil Services Preliminary Examination 2018 by Edgar Thorpe, Showick Thorpe
4. General Studies Paper I 2018 by MHE

Indian History

1. History of Modern Indiaby Bipan Chandra
2. India's Struggle for Independenceby Bipan Chandra
3. India's Ancient Past by R.S.Sharma
4. A Brief History Of Modern Indiaby Rajiv Ahir
5. A History of Medieval India by Chandra Satish
6. Concise History of Modern India for Civil Services Examination by Sujata Menon
7. A New Look at Modern Indian History: Form 1707 To The Modern Times by B.L. Grover, Alka Mehta

Art & Culture

1. The Wonder That Was India by A.L. Bhasham
2. Indian Art and Culture by Nitin Singhania

Indian Geography

1. Oxford School Atlas – Oxford. (Geography)
2. Geography of India by Majid Husain ,TMH Publishing
3. Certificate Physical and Human Geography by Goh Cheng Leong
4. Indian and World Geography: Objective Questions with Explanatory Notes for Civil Services Preliminary Examination by D.R. Khullar
5. Oxford School Atlas by Oxford

Indian Polity

1. Indian Polity by M. Laxmikanth
2. Introduction to the Constitution of India by D.D.Basu
3. Magbook Indian Polity & Governance by Arihant Publication
4. Indian Polity, Governance and National Movement for Civil Services Preliminary Examination - Paper 1 by N D Arora, Access Publishing

Indian Economy

1. Indian Economy Book by Ramesh Singh
2. The Indian Economy Book by Sanjiv Verma
3. Indian Economy: Performance and Policies: 2016 - 17 by Uma Kapila

Environment

1. Environment for Civil Services Prelims and Mains and Other Competitive Examinations Paperbackby D R Khullar, J A C S Rao
2. Environmental Studies: From Crisis to Cure Book by R. Rajagopalan

General Studies Paper II

1. General Studies Paper II 2018 by MHE
2. General Studies Paper 2 for Civil Services Preliminary Examination 2018 by V. Sasikumar, N.D. Arora, Prem Sahajpal
3. CSAT - Solved Papers for Civil Services Preliminary Examination (General Studies Paper II)by Access
4. General Studies Paper II For Civil Services Preliminary Examination 2018 by Edgar Thorpe, Showick Thorpe
5. Cracking the CSAT Paper-2 by Arihant Experts

Books for Mains:

1. IAS Mains General Studies Paper 1 INDIAN HERITAGE & CULTURE HISTORY & GEOGRAPHY OF THE WORLD & SOCIETY by Arihant Experts (Reference Manual GS-1)
2. History of Modern World by Jain, Mathur (History GS-1)
3. Social Problems In India by Ram Ahuja (Indian Society GS-1)
4. India After Gandhi: The History of the World's Largest Democracy by Ramachandra Guha (World History GS-1)
5. IAS Mains General Studies Paper 2 GOVERNANCE CONSTITUTION, POLITY SOCIAL JUSTICE & INTERNATIONAL RELATIONS (Reference Manual GS-2)
6. Governance for Growth in India (Governance GS-2)
7. Pax Indica: India and the World of the 21st Century by Shashi Tharoor (Foreign Policy GS-2)
8. India and the World: Through the Eyes of Indian Diplomats by Surendra Kumar (Foreign Policy GS-2)
9. IAS Mains General Studies Paper 3 TECHNOLOGY ECONOMIC DEVELOPMENT BIODIVERSITY ENVIRONMENT, SECURITY & DISASTER MANAGEMENT (Reference Manual GS-3)
10. India’s National Security: A Reader (Critical Issues in Indian Politics) (National Security GS-3)
11. Internal Security & Disaster Management GS Paper 3 (Internal Security GS-3)
12. IAS Mains General Studies Paper 4 ETHICS INTEGRITY & APTITUDE (Reference Manual GS-4)
13. Contemporary Essays for Civil Services Examination (Essay)
14. 151 Essays (Essay)

Books for Interview:

1. Interviews The Last Basic Tips On facing Civil Services Personality Test (Interview Basics)
2. What…? When…? How…? Answers to All Questions About Civil Services (Interview) (Interview Questions)

 To download the free digital books