Yoffie, D. B. C. (2015). Strategy Rules. HarperCollins.
Chicago-čujuhus (17. p.)Yoffie, David B.; Cusumano. Strategy Rules. New York: HarperCollins, 2015.
MLA-čujuhus (9. p.)Yoffie, David B.; Cusumano. Strategy Rules. HarperCollins, 2015.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.