Hegel, G. W. F., & Hartman, R. S. (1953). Reason in history: A general introduction to the philosophy of history. New York: Liberal Arts Press.
استشهاد بنمط شيكاغوHegel, Georg Wilhelm Friedrich, و Robert S. Hartman. Reason in History: A General Introduction to the Philosophy of History. New York: Liberal Arts Press, 1953.
MLA استشهادHegel, Georg Wilhelm Friedrich, و Robert S. Hartman. Reason in History: A General Introduction to the Philosophy of History. New York: Liberal Arts Press, 1953.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.