Lewis, R. (1961). The managers: A new examination of the English, German and American executive. New York: New American Library.
استشهاد بنمط شيكاغوLewis, Roy. The Managers: A New Examination of the English, German and American Executive. New York: New American Library, 1961.
MLA استشهادLewis, Roy. The Managers: A New Examination of the English, German and American Executive. New York: New American Library, 1961.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.