Drucker, P. F. (1970). The age of discontinuity: Guidelines to our changing society. New York: Harper & Row.
استشهاد بنمط شيكاغوDrucker, Peter F. The Age of Discontinuity: Guidelines to Our Changing Society. New York: Harper & Row, 1970.
MLA استشهادDrucker, Peter F. The Age of Discontinuity: Guidelines to Our Changing Society. New York: Harper & Row, 1970.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.