Drucker , P. (1993). Managing for results. Harper Business.
Chicagoスタイル(17版)引用形式Drucker , Peter. Managing for Results. New York: Harper Business, 1993.
MLA(9版)引用形式Drucker , Peter. Managing for Results. Harper Business, 1993.
警告: この引用は必ずしも正確ではありません.