Barwise,Patrick. (2004). Simply better (1.). Harvard Business Press.
Cita Chicago (17th ed.)Barwise,Patrick. Simply Better. 1. Harvard Business Press, 2004.
Cita MLA (9th ed.)Barwise,Patrick. Simply Better. 1. Harvard Business Press, 2004.
Atenció: Aquestes cites poden no estar 100% correctes.