Cita APA (7a ed.)
Pratt, J. W. (1965). A history of United States foreign policy. Prentice-Hall.
Cita estilo Chicago (17a ed.)
Pratt, Julius William. A History of United States Foreign Policy. Englewood Cliffs, EUA: Prentice-Hall, 1965.
Cita MLA (9a ed.)
Pratt, Julius William. A History of United States Foreign Policy. Prentice-Hall, 1965.
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