Baucells, M., & Sarin, R. (2012). Engineering happiness: A new approach for building a joyful life. University of California Press.
Chicago-čujuhus (17. p.)Baucells, Manel, juo Rakesh Sarin. Engineering Happiness: A New Approach for Building a Joyful Life. Berkeley: University of California Press, 2012.
MLA-čujuhus (9. p.)Baucells, Manel, juo Rakesh Sarin. Engineering Happiness: A New Approach for Building a Joyful Life. University of California Press, 2012.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.