Cita APA (7th ed.)

Drucker, P. F. (1995). Managing in a time of great change. Truman Alley Books.

Cita Chicago (17th ed.)

Drucker, Peter Ferdinand. Managing in a Time of Great Change. New York: Truman Alley Books, 1995.

Cita MLA (9th ed.)

Drucker, Peter Ferdinand. Managing in a Time of Great Change. Truman Alley Books, 1995.