Recommended books for general studies in UPSC preparation include titles such as "Indian Polity" by M. Laxmikanth, which provides a comprehensive overview of the political system. For Indian History, "India’s Struggle for Independence" by Bipan Chandra is essential. In Geography, "Certificate Physical and Human Geography" by Goh Cheng Leong is highly regarded. "General Studies Paper I" and "II" by authors like McGraw Hill and Tata McGraw Hill also cover relevant topics comprehensively. For ethics and integrity, "Ethics, Integrity & Aptitude" by G. Subba Rao is recommended, providing insights into ethical governance and public administration.