Drucker, P. F. (1989). The New Realities. Harper $ Row.
Chicago-čujuhus (17. p.)Drucker, Peter F. The New Realities. New York: Harper $ Row, 1989.
MLA-čujuhus (9. p.)Drucker, Peter F. The New Realities. Harper $ Row, 1989.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.