Cita APA (7th ed.)

Nicholas, H. G. (1962). The American Union: A short history of the U.S.A ([New ed.].). Christophers.

Cita Chicago (17th ed.)

Nicholas, Herbert George. The American Union: A Short History of the U.S.A. [New ed.]. London: Christophers, 1962.

Cita MLA (9th ed.)

Nicholas, Herbert George. The American Union: A Short History of the U.S.A. [New ed.]. Christophers, 1962.