Cita APA

Riegel, R. E., & Haugh, H. (1953). United States of America: A history. Scribner.

Chicago Style (17th ed.) Citation

Riegel, Robert Edgar, i Helen Haugh. United States of America: A History. New York: Scribner, 1953.

Cita MLA

Riegel, Robert Edgar, i Helen Haugh. United States of America: A History. Scribner, 1953.

Atenció: Aquestes cites poden no estar 100% correctes.