Unruh, G. (2010). Earth, Inc: Using nature's rules to build sustainable profits. Harvard Business Press.
Chicago Edition CitationUnruh, Gregory. Earth, Inc: Using Nature's Rules to Build Sustainable Profits. Boston: Harvard Business Press, 2010.
Cita MLAUnruh, Gregory. Earth, Inc: Using Nature's Rules to Build Sustainable Profits. Harvard Business Press, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.