APA način citiranja

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

Čikaški stil citiranja

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

MLA način citiranja

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

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