Gupta, M. (1977). Bhagat Singh and his times. Lipi Prakashan.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGupta, Manmathnath. Bhagat Singh and His Times. Lipi Prakashan, 1977.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGupta, Manmathnath. Bhagat Singh and His Times. Lipi Prakashan, 1977.
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