Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.