Cita APA (7a ed.)

Perkins, D. (1962). The American approach to foreign policy (Rev. ed.). Harvard University Press.

Cita Chicago Style (17a ed.)

Perkins, Dexter. The American Approach to Foreign Policy. Rev. ed. Cambridge (Massachusetts): Harvard University Press, 1962.

Cita MLA (9a ed.)

Perkins, Dexter. The American Approach to Foreign Policy. Rev. ed. Harvard University Press, 1962.