Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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