Doblelli Rolf. (2013). Art of Thinking Clearly. Sceptre.
Chicago-čujuhus (17. p.)Doblelli Rolf. Art of Thinking Clearly. UK: Sceptre, 2013.
MLA-čujuhus (9. p.)Doblelli Rolf. Art of Thinking Clearly. Sceptre, 2013.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.