Smith David. (2015). Exploring Innovation (3rd.). McGraw Hill.
Chicago-čujuhus (17. p.)Smith David. Exploring Innovation. 3rd. McGraw Hill, 2015.
MLA-čujuhus (9. p.)Smith David. Exploring Innovation. 3rd. McGraw Hill, 2015.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.