Solomon, C. R. (1971). Handbook of happiness. House of Solomon.
Chicago-čujuhus (17. p.)Solomon, Charles R. Handbook of Happiness. Denver: House of Solomon, 1971.
MLA-čujuhus (9. p.)Solomon, Charles R. Handbook of Happiness. House of Solomon, 1971.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.