Drucker, P. F., & Collins, J. C. (2008). The five most important questions you will ever ask about your organization. New York : Jossey-Bass.
Chicago-čujuhus (17. p.)Drucker, Peter F., juo James C. Collins. The Five Most Important Questions You Will Ever Ask About Your Organization. New York : Jossey-Bass, 2008.
MLA-čujuhus (9. p.)Drucker, Peter F., juo James C. Collins. The Five Most Important Questions You Will Ever Ask About Your Organization. New York : Jossey-Bass, 2008.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.