Kolambe Ranjan. (2021). UPSC MPSC Vidnyan Ani Tantradnyan (9th ed.). Bhagirath Prakashan.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKolambe Ranjan. UPSC MPSC Vidnyan Ani Tantradnyan. 9th ed. Pune: Bhagirath Prakashan, 2021.
एमएलए (9वां संस्करण) प्रशस्ति पत्रKolambe Ranjan. UPSC MPSC Vidnyan Ani Tantradnyan. 9th ed. Bhagirath Prakashan, 2021.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.