Recommended books for Indian history in UPSC studies include NCERT textbooks for foundational knowledge, India’s Struggle for Independence by Bipin Chandra for insights on the freedom movement, and History of Modern India also by Bipin Chandra for understanding socio-political developments. For ancient and medieval history, aspirants can refer to Romila Thapar’s works. Moreover, certified study guides such as Spectrum's Modern History can provide comprehensive content. Utilizing a mix of these resources can enhance understanding and retention of historical events relevant to the UPSC syllabus.