APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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