DRUCKER PETER F. (1985). INNOVATION AND ENTREPRENEURSHIP: PRACTICE AND PRINCIPLES. HARPER BUSINESS.
Chicago-čujuhus (17. p.)DRUCKER PETER F. INNOVATION AND ENTREPRENEURSHIP: PRACTICE AND PRINCIPLES. NEW YORK: HARPER BUSINESS, 1985.
MLA-čujuhus (9. p.)DRUCKER PETER F. INNOVATION AND ENTREPRENEURSHIP: PRACTICE AND PRINCIPLES. HARPER BUSINESS, 1985.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.