Johnson, S. (2011). Where good ideas come from. Penguin books.
Chicago-čujuhus (17. p.)Johnson, Steven. Where Good Ideas Come from. London: Penguin books, 2011.
MLA-čujuhus (9. p.)Johnson, Steven. Where Good Ideas Come from. Penguin books, 2011.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.