Cita APA (7a ed.)

Beard, C. A., & Beard, M. R. (1944). New Basic History and the United States. Doubleday-Company.

Cita Chicago Style (17a ed.)

Beard, Charles A., y Mary R. Beard. New Basic History and the United States. New York: Doubleday-Company, 1944.

Cita MLA (8a ed.)

Beard, Charles A., y Mary R. Beard. New Basic History and the United States. Doubleday-Company, 1944.