Citazione Stile APA (7a Edizione)

Beard, C. A., & Beard, M. R. (1944). A basic history of the United States. New York: New Home Library.

Citazione stile Chigago Style (17a edizione)

Beard, Charles A., e Mary R. Beard. A Basic History of the United States. New York: New Home Library, 1944.

Citatione MLA (8a ed.)

Beard, Charles A., e Mary R. Beard. A Basic History of the United States. New York: New Home Library, 1944.