APA način citiranja (7. izdanje)

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

Čikaški stil citiranja (17. izdanje)

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

MLA način citiranja (8. izdanje)

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