New Vishal Publication. (2019). IAS Preliminary Civil Services (Pre.)Exam General Studies Paper-2. New Vishal Publication.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNew Vishal Publication. IAS Preliminary Civil Services (Pre.)Exam General Studies Paper-2. New Delhi: New Vishal Publication, 2019.
एमएलए (9वां संस्करण) प्रशस्ति पत्रNew Vishal Publication. IAS Preliminary Civil Services (Pre.)Exam General Studies Paper-2. New Vishal Publication, 2019.
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