Christensen, C. M. (2012). HOW WILL YOU MEASURE YOUR LIFE? HARPER COLLINS PUB.,UK.
Cita Chicago Style (17a ed.)Christensen, Clayton M. HOW WILL YOU MEASURE YOUR LIFE? HARPER COLLINS PUB.,UK, 2012.
Cita MLA (9a ed.)Christensen, Clayton M. HOW WILL YOU MEASURE YOUR LIFE? HARPER COLLINS PUB.,UK, 2012.
Precaución: Estas citas no son 100% exactas.