APA

Drucker P. F., . (1995). Managing in a time of great change. New York: Truman Talley Books.

Chicago

Drucker Peter F, . 1995. Managing in a time of great change. New York: Truman Talley Books.

Harvard

Drucker P. F., . (1995). Managing in a time of great change. New York: Truman Talley Books.

MLA

Drucker Peter F, . Managing in a time of great change. New York: Truman Talley Books. 1995.