Harvard Business School. (2009). Innovator's Toolkit. Harvard Business.
Chicago-čujuhus (17. p.)Harvard Business School. Innovator's Toolkit. Boston: Harvard Business, 2009.
MLA-čujuhus (9. p.)Harvard Business School. Innovator's Toolkit. Harvard Business, 2009.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.