Hi,
Following are the best books for studying history for UPSC
1. India's Ancient Past by R.S. Sharma
2. The wonder that was India by A.L Basham for Ancient History
3. Medieval India by Satish Chandra
4. Advanced Study in the History of Medieval India all the three volumes by J.L Mehta
5.History of Modern India by Bipan Chandra
6.India's Struggle for Independence: 1857-1947 by Bipan Chandra
7.History of the World by Arjun Dev and Indira Arjun Dev
8. Art and Culture by Nitin Singhania
9. History of Modern India by Ramchandra Guha
10. A History of Ancient and Early Medieval India by Upinder Singh

Hi

Top books for your UPSC examination are listed below subject wise:-

HISTORY

NCERT XI (Ancient & Medieval)
NCERT XII (Modern Indian History)
Facets of Indian Culture Spectrum
From Plassey to Partition - A History of Modern India

Indian Art & Culture

Indian Art & Culture - Nitin Singhania

Polity

NCERT IX-XII
Indian Polity M Laxmikanth

Geography

NCERT VI X (Old Syllabus)
NCERT XI, XII (New Syllabus)
Certificate Physical Geography G C Leong
World Atlas

Economics

NCERT XI
The Indian Economy Sanjiv Verma
Indian Economy by Ramesh Singh
Economic Development & Policies in India Jain & Ohri

Environment

Class XII Biology (last 5 chapters)
Environment by Shankar IAS Academy
Environment & Ecology: Biodiversity, Climate Change and Disaster Management - General Studies for Civil Services (Main) Examination - Paper II and IV - Majid Hussain

International Relations

NCERT XII (Contemporary World Politics)
Current Affairs ( read newspaper as well)

To get the complete list of books go through
https://competition.careers360.com/articles/books-for-upsc-ias Thank you