APA সাইটেশন

Drucker, P. F. (2009). Managing in a time of great change. Boston, Mass: Harvard Business Press.

শিকাগো স্টাইলে সাইটেশন

Drucker, Peter F. Managing in a Time of Great Change. Boston, Mass: Harvard Business Press, 2009.

এমএলএ সাইটেশন

Drucker, Peter F. Managing in a Time of Great Change. Boston, Mass: Harvard Business Press, 2009.