Abrahamson Eric & Freedman David. (2006). Perfect Mess: The Hidden Benfits of Disorder. Phoenix Peparback.
Chicago-čujuhus (17. p.)Abrahamson Eric juo Freedman David. Perfect Mess: The Hidden Benfits of Disorder. London ,UK: Phoenix Peparback, 2006.
MLA-čujuhus (9. p.)Abrahamson Eric juo Freedman David. Perfect Mess: The Hidden Benfits of Disorder. Phoenix Peparback, 2006.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.