.Drucker, P. F. (2000). Management challenges for the 21st century. Butterworth-Heinemann.
Citación estilo Chicago.Drucker, Peter F. Management Challenges for the 21st Century. Oxford: Butterworth-Heinemann, 2000.
Cita MLA.Drucker, Peter F. Management Challenges for the 21st Century. Butterworth-Heinemann, 2000.
Warning: These citations may not always be 100% accurate.