Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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