Cita APA (7th ed.)

Pratt, J. W. (1965). A history of United States foreign policy (2a. ed.). Prentice-Hall.

Cita Chicago (17th ed.)

Pratt, Julius W. A History of United States Foreign Policy. 2a. ed. Englewood Cliffs: Prentice-Hall, 1965.

Cita MLA (9th ed.)

Pratt, Julius W. A History of United States Foreign Policy. 2a. ed. Prentice-Hall, 1965.

Atenció: Aquestes cites poden no estar 100% correctes.