Lafley, A. G. Playing to Win. Harvard Business Review Press.
Chicago-čujuhus (17. p.)Lafley, A. G. Playing to Win. Harvard Business Review Press.
MLA-čujuhus (9. p.)Lafley, A. G. Playing to Win. Harvard Business Review Press.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.