Wimmer, N. (2012). Green energy for a billion poor: How Grameen Shakti created a winning model for social business. MCRE Verlag.
Chicago-referens (17:e uppl.)Wimmer, Nancy. Green Energy for a Billion Poor: How Grameen Shakti Created a Winning Model for Social Business. Vaterstetten: MCRE Verlag, 2012.
MLA-referens (8:e uppl.)Wimmer, Nancy. Green Energy for a Billion Poor: How Grameen Shakti Created a Winning Model for Social Business. MCRE Verlag, 2012.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.