Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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