APA ציטוט

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

Trích dẫn kiểu Chicago

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

ציטוט MLA

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