Gaya APA

Merk, F., , . (1968). The monroe doctrine and American expansionism 1843-1849 . New York: New York: Alfred A. Knopf; 1968.

Gaya MLA

Merk, Frederick., , . "The monroe doctrine and American expansionism 1843-1849". New York: New York: Alfred A. Knopf; 1968, 1968. Text.