Earth, Inc. :using nature's rules to build sustainable profits

 Unruh, Gregory.;

Boston, Mass. : : Harvard Business Press, , 2010

Harvard business review on greening your business provitably

 Harvard Business School Publishing Press; Nidumolu, Ram; Unruh, Gregory; Lubin, David A.; Swartz, Jeff; Porter, Michael E.;

Massachusetts : Harvard Business Review Press, , 2011