APA-referens

Drucker, P. F. 1. (1999). Management challenges for the 21st century. Oxford: Butterworth-Heinemann.

Chicago-stil citat

Drucker, Peter F. 1909-. Management Challenges for the 21st Century. Oxford: Butterworth-Heinemann, 1999.

MLA-referens

Drucker, Peter F. 1909-. Management Challenges for the 21st Century. Oxford: Butterworth-Heinemann, 1999.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.