Drucker, P. F. (2008). Classic drucker: Essential wisdom of Peter Drucker from the pages of Harvard Business Review. Harvaed Business.
استشهاد بنمط شيكاغوDrucker, Peter F. Classic Drucker: Essential Wisdom of Peter Drucker from the Pages of Harvard Business Review. Boston: Harvaed Business, 2008.
MLA استشهادDrucker, Peter F. Classic Drucker: Essential Wisdom of Peter Drucker from the Pages of Harvard Business Review. Harvaed Business, 2008.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.