Cita APA (7th ed.)
Borden, M., & Graham, O. L. (1973). Portrait of a nation: A history of the United States. Heath.
Cita Chicago (17th ed.)
Borden, Morton, i Otis L. Graham. Portrait of a Nation: A History of the United States. Lexington, Mass.: Heath, 1973.
Cita MLA (9th ed.)
Borden, Morton, i Otis L. Graham. Portrait of a Nation: A History of the United States. Heath, 1973.
Atenció: Aquestes cites poden no estar 100% correctes.