Duckett, E. S. (1951). Alcuin: Friend of Charlemagne, his world and his work. New York: Macmillan.
استشهاد بنمط شيكاغوDuckett, Eleanor Shipley. Alcuin: Friend of Charlemagne, His World and His Work. New York: Macmillan, 1951.
MLA استشهادDuckett, Eleanor Shipley. Alcuin: Friend of Charlemagne, His World and His Work. New York: Macmillan, 1951.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.