Drucker, P. F. (2017). The theory of the business. Boston, Massachusetts: Harvard Business Review Press.
استشهاد بنمط شيكاغوDrucker, Peter F. The Theory of the Business. Boston, Massachusetts: Harvard Business Review Press, 2017.
MLA استشهادDrucker, Peter F. The Theory of the Business. Boston, Massachusetts: Harvard Business Review Press, 2017.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.