Drucker, P. F. (1995). Managing in a time of great change. Truman Alley Books.
Chicagoスタイル(17版)引用形式Drucker, Peter Ferdinand. Managing in a Time of Great Change. New York: Truman Alley Books, 1995.
MLA(9版)引用形式Drucker, Peter Ferdinand. Managing in a Time of Great Change. Truman Alley Books, 1995.
警告: この引用は必ずしも正確ではありません.