Cita APA

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

Chicago Style Citation

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

Cita MLA

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

Atenció: Aquestes cites poden no estar 100% correctes.