Pritchett, P. (2007). Hard optimism: How to succeed in a world where positive wins. New York: McGraw-Hill.
Stile di citazione ChicagoPritchett, Price. Hard Optimism: How to Succeed in a World Where Positive Wins. New York: McGraw-Hill, 2007.
Citazione MLAPritchett, Price. Hard Optimism: How to Succeed in a World Where Positive Wins. New York: McGraw-Hill, 2007.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.