Bykvist, K. (2010). Happiness in a Flux? The Instability Problem.
Chicago-čujuhus (17. p.)Bykvist, K. Happiness in a Flux? The Instability Problem. 2010.
MLA-čujuhus (9. p.)Bykvist, K. Happiness in a Flux? The Instability Problem. 2010.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.