Shapiro, C. (1999). Information Rules. Harvard Business School Press.
Chicago-čujuhus (17. p.)Shapiro, Carl. Information Rules. Boston: Harvard Business School Press, 1999.
MLA-čujuhus (9. p.)Shapiro, Carl. Information Rules. Harvard Business School Press, 1999.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.