Kennedy, P. M. (1993). Preparing for the twenty-first century. Random House.
Chicago-čujuhus (17. p.)Kennedy, Paul M. Preparing for the Twenty-first Century. New York: Random House, 1993.
MLA-čujuhus (9. p.)Kennedy, Paul M. Preparing for the Twenty-first Century. Random House, 1993.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.