APA引文

Beard, C. A., & Beard, M. R. (1944). A basic history of the United States. New York: New Home Library.

Chicago Style (17th ed.) Citation

Beard, Charles A., and Mary R. Beard. A Basic History of the United States. New York: New Home Library, 1944.

MLA引文

Beard, Charles A., and Mary R. Beard. A Basic History of the United States. New York: New Home Library, 1944.