APA (7th ed.) Citation

Drucker, P. F. (2001). Management challenges for the 21st century (EPub edition.). HarperBusiness.

Chicago Style (17th ed.) Citation

Drucker, Peter F. Management Challenges for the 21st Century. EPub edition. New York: HarperBusiness, 2001.

MLA (9th ed.) Citation

Drucker, Peter F. Management Challenges for the 21st Century. EPub edition. HarperBusiness, 2001.

Warning: These citations may not always be 100% accurate.