Brecht, A. Political theory: The foundations of twentieth century political thought.
استشهاد بنمط شيكاغوBrecht, Arnold. Political Theory: The Foundations of Twentieth Century Political Thought. New Delhi, Surjeet Publications.
MLA استشهادBrecht, Arnold. Political Theory: The Foundations of Twentieth Century Political Thought.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.