Cita APA (7a ed.)

Beard, M. R., Beard, C. A., & Beard, W. (1960). The Beards': New Basic History of United States. Doubleday.

Cita Chicago Style (17a ed.)

Beard, Mary R., Charles A. Beard, y William Beard. The Beards': New Basic History of United States. New York: Doubleday, 1960.

Cita MLA (9a ed.)

Beard, Mary R., et al. The Beards': New Basic History of United States. Doubleday, 1960.