APA citiranje

Pritchett, P. (2007). Hard optimism: How to succeed in a world where positive wins. New York: McGraw-Hill.

Trích dẫn kiểu Chicago

Pritchett, Price. Hard Optimism: How to Succeed in a World Where Positive Wins. New York: McGraw-Hill, 2007.

MLA citiranje

Pritchett, Price. Hard Optimism: How to Succeed in a World Where Positive Wins. New York: McGraw-Hill, 2007.