Drucker, P. F. (1992). Managing for the future. Butterworth/Heinemann.
Chicagoスタイル(17版)引用形式Drucker, Peter F. Managing for the Future. Oxford: Butterworth/Heinemann, 1992.
MLA(9版)引用形式Drucker, Peter F. Managing for the Future. Butterworth/Heinemann, 1992.
警告: この引用は必ずしも正確ではありません.