Cita APA (7a ed.)

Beard, C. A., Beard, M. R., & Beard, W. (1960). The Beards' new basic history of the United States. Doubleday.

Cita Chicago Style (17a ed.)

Beard, Charles Austin, Mary Ritter Beard, y William Beard. The Beards' New Basic History of the United States. Garden City, New York: Doubleday, 1960.

Cita MLA (9a ed.)

Beard, Charles Austin, et al. The Beards' New Basic History of the United States. Doubleday, 1960.