Citazione Stile APA (7a Edizione)

Beard, C. A., & Beard, M. (1944). A basic history of the United States. Doubleday, Doran.

Citazione stile Chigago Style (17a edizione)

Beard, Charles Austin, e Mary Beard. A Basic History of the United States. New York: Doubleday, Doran, 1944.

Citatione MLA (9a ed.)

Beard, Charles Austin, e Mary Beard. A Basic History of the United States. Doubleday, Doran, 1944.