Pratt,. (1965). A history of United States foreign policy (2nd ed.). prentice-Hall.
Cita Chicago (17th ed.)Pratt. A History of United States Foreign Policy. 2nd ed. Englewood cliffs: prentice-Hall, 1965.
Cita MLA (9th ed.)Pratt. A History of United States Foreign Policy. 2nd ed. prentice-Hall, 1965.
Atenció: Aquestes cites poden no estar 100% correctes.