Cita APA

Frost, J. A. (1968). A History of the United States: The evolution of a free people. Follett Pub. Co..

Citación estilo Chicago

Frost, James Arthur. A History of the United States: The Evolution of a Free People. Chicago: Follett Pub. Co., 1968.

Cita MLA

Frost, James Arthur. A History of the United States: The Evolution of a Free People. Follett Pub. Co., 1968.