APA

Duckett E. S., . (1951). Alcuin: friend of Charlemagne, his world and his work. New York: Macmillan.

Chicago

Duckett Eleanor Shipley, . 1951. Alcuin: friend of Charlemagne, his world and his work. New York: Macmillan.

Harvard

Duckett E. S., . (1951). Alcuin: friend of Charlemagne, his world and his work. New York: Macmillan.

MLA

Duckett Eleanor Shipley, . Alcuin: friend of Charlemagne, his world and his work. New York: Macmillan. 1951.