Cita APA

Beard, C. A., & Beard, M. R. (1933). The rise of american civilization. Macmillan.

Citación estilo Chicago

Beard, Charles A., and Mary R. Beard. The Rise of American Civilization. Nueva York: Macmillan, 1933.

Cita MLA

Beard, Charles A., and Mary R. Beard. The Rise of American Civilization. Macmillan, 1933.