APA aipamena

Drucker, P. F. (2007). Management challenges for the 21st century. Routledge.

Chicago Style aipamena

Drucker, Peter F. Management Challenges for the 21st Century. New York: Routledge, 2007.

MLA aipamena

Drucker, Peter F. Management Challenges for the 21st Century. Routledge, 2007.