Cita APA

Beard, C. A., & Bagley, W. C. (1946). A first book in American history (Rev. ed.). Macmillan Co..

Citación estilo Chicago

Beard, Charles A., and William C. Bagley. A First Book in American History. Rev. ed. New York: Macmillan Co., 1946.

Cita MLA

Beard, Charles A., and William C. Bagley. A First Book in American History. Rev. ed. Macmillan Co., 1946.