Gaya APA

Ubel, P, A. (2009). Free market madness: why human nature is at odds with economics and why it matters (1). United States of America: Harvard Business School Press.

Gaya MLA

Ubel, Peter, A.. "Free market madness: why human nature is at odds with economics and why it matters". 1 United States of America: Harvard Business School Press, 2009. Text.