APA (7th ed.) Citation

Drucker, P. F. (2002). Management challenges for the 21st century (EPub ed.). HarperCollins Publishers.

Chicago Style (17th ed.) Citation

Drucker, Peter F. Management Challenges for the 21st Century. EPub ed. Pymble, N.S.W. ; New York, N.Y.: HarperCollins Publishers, 2002.

MLA (9th ed.) Citation

Drucker, Peter F. Management Challenges for the 21st Century. EPub ed. HarperCollins Publishers, 2002.

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