The Indian Administrative Service is the premier administrative civil service of the Government of India. IAS officers hold key and strategic positions in the Union Government, States and public-sector undertakings.

As per your demand here I am suggesting you books for IAS Exam
Prelims Exam
-History Of Modern India – Bipan Chandra. (History)
-India’s Struggle For Independence – Bipan Chandra. (History)
-India’s Ancient Past – R.S. Sharma. (History)
-History Of Medieval India – Satish Chandra. (History)
-The Wonder That Was India – A.L. Bhasham. (Culture)
-Indian Art and Culture – Nitin Singhania. (Culture)
-Geography of India – Majid Husain. (Geography)
-Oxford School Atlas – Oxford. (Geography)
-Certificate Physical and Human Geography – Goh Cheng Leong. (Geography)
-Indian Polity for Civil Services Examinations – M. Laxmikanth. (Polity)
-Indian Economy – Ramesh Singh. (Economy)
-Economic Survey. (Economy)
-Science and Technology in India – TMH. (Science and Technology)
-Environmental Studies: From Crisis to Cure – Rajagopalan. (Environment)
-Environment for Civil Services Prelims and Mains – Khuller. (Environment)
-India Year Book (Current Affairs)
-Manorama Yearbook. (Current Affairs)
-CSAT Paper – 2 Manual by TMH or CSAT-II – Arihant (CSAT – Paper 2)
-Analytical Reasoning – M. K. Pandey (CSAT – Paper 2: Analytical Reasoning)
-Verbal & Non-Verbal Reasoning – R. S.Aggarwal (CSAT Paper 2: Reasoning)

Mains Exam
-Contemporay Essays by Ramesh Singh OR 151 ESSAYS For UPSC Mains (Essay Paper)
-India After Gandhi – Ramchandra Guha (History – GS1)
-Norman Lowe OR History of Modern World – Jain and Mathur (World History – GS1)
-Social Problems In India – Ram Ahuja. (Indian Society – GS1)
-IAS Mains General Studies Paper 2 (Arihant Manual – GS2)
-Governance in India for CSE. (Governance – GS2)
-Pax Indica – Shashi Tharoor. (Foreign Policy – GS2)
-India and the World by Surendra Kumar. (Foreign Policy – GS2)
-IAS Mains General Studies – GS3. (Arihant Manual – GS3)
-India’s National Security: A Reader. (Internal Security – GS3)
-Challenges to Internal Security of India. (Internal Security – GS3)
-Lexicon for Ethics, Integrity and Aptitude. ( Ethics – GS4)
-IAS Mains General Studies – Ethics. ( Arihant Manual – GS4)