The study of optional demands a rich study. And although the standard notes are there, sometimes they are not sufficient. Additionally, there is also a dynamic aspect of the subject that is either too vast to too changing to put in notes. Hence, we are presenting a list of standard books and articles on each topic that can be referred to. We will also try to include the review of the book/article from an exam perspective.
India's Struggle for Independence
by Bipan Chadra
Black Swan Publications
Subhas Kashyap on Indian Constitution
The Oxford Handbook of the Indian Constitution
INDIAN POLITY by M Laxmikant
3) Indian Politics
The Oxford Companion to Politics in India: Student Edition
4) Other Important Books
NCERT Indian Economic Development.
NCERT Politics in India since independence