APA(7版)引用形式

Drucker, P. F. (1999). Management challenges for the 21st century (First edition.). HarperBusiness.

Chicagoスタイル(17版)引用形式

Drucker, Peter F. Management Challenges for the 21st Century. First edition. New York: HarperBusiness, 1999.

MLA(8版)引用形式

Drucker, Peter F. Management Challenges for the 21st Century. First edition. HarperBusiness, 1999.

警告: この引用は必ずしも正確ではありません.