APA (7th ed.) Citation

Beard, C. A., & Beard, M. R. (1921). American citizenship. The Macmillan company.

Chicago Style (17th ed.) Citation

Beard, Charles A., and Mary Ritter Beard. American Citizenship. New York: The Macmillan company, 1921.

MLA (9th ed.) Citation

Beard, Charles A., and Mary Ritter Beard. American Citizenship. The Macmillan company, 1921.