Sarkar Samim & Kar Sutapa. (2021). General Science& Science And Technology Theory and Questions For UPSC,SPSC,CGL other (1st.). Mc Grow Hill Education (India).
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSarkar Samim और Kar Sutapa. General Science& Science And Technology Theory and Questions For UPSC,SPSC,CGL Other. 1st. New Delhi: Mc Grow Hill Education (India), 2021.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSarkar Samim और Kar Sutapa. General Science& Science And Technology Theory and Questions For UPSC,SPSC,CGL Other. 1st. Mc Grow Hill Education (India), 2021.
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