Drucker, P. F. (2017). The Theory of the Business. Harvard Business Review Press.
Chicago-čujuhus (17. p.)Drucker, Peter F. The Theory of the Business. Boston, Massachesutts: Harvard Business Review Press, 2017.
MLA-čujuhus (9. p.)Drucker, Peter F. The Theory of the Business. Harvard Business Review Press, 2017.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.