Christensen, C. M. (2012). How Will You Measure Your Life? (1 st.). Harper Collins.
Chicago-čujuhus (17. p.)Christensen, Clayton M. How Will You Measure Your Life? 1 st. Harper Collins, 2012.
MLA-čujuhus (9. p.)Christensen, Clayton M. How Will You Measure Your Life? 1 st. Harper Collins, 2012.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.