Wimmer, N. (2012). Green energy for a billion poor: How Grameen Shakti created a winning model for social business. MCRE Verlag.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWimmer, Nancy. Green Energy for a Billion Poor: How Grameen Shakti Created a Winning Model for Social Business. Vaterstetten: MCRE Verlag, 2012.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWimmer, Nancy. Green Energy for a Billion Poor: How Grameen Shakti Created a Winning Model for Social Business. MCRE Verlag, 2012.
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