Bhattacharyya, P. S., & Mukherjee, P. (2018). When coal turned gold: The making of a Maharatna company. Penguin Random House.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBhattacharyya, Partha Sarathi, और Pranab Mukherjee. When Coal Turned Gold: The Making of a Maharatna Company. Penguin Random House, 2018.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBhattacharyya, Partha Sarathi, और Pranab Mukherjee. When Coal Turned Gold: The Making of a Maharatna Company. Penguin Random House, 2018.
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