Citazione APA

Pratt, J. W. (1965). A history of US foreign policy (2nd.). N J Prentice Hall.

Stile di citazione Chicago

Pratt, Jullius W. A History of US Foreign Policy. 2nd. Englewood cliffs: N J Prentice Hall, 1965.

Citazione MLA

Pratt, Jullius W. A History of US Foreign Policy. 2nd. N J Prentice Hall, 1965.