Christensen, C. M. (2012). How Will You Measure Your Life? (1 st.). Harper Collins.
Cita Chicago (17th ed.)Christensen, Clayton M. How Will You Measure Your Life? 1 st. Harper Collins, 2012.
Cita MLA (9th ed.)Christensen, Clayton M. How Will You Measure Your Life? 1 st. Harper Collins, 2012.
Atenció: Aquestes cites poden no estar 100% correctes.