Cita APA (7a ed.)

Hook, S. W., & Spanier, J. W. (2016). American foreign policy since World War II (20th ed.). Sage.

Cita Chicago Style (17a ed.)

Hook, Steven W., y John W. Spanier. American Foreign Policy Since World War II. 20th ed. Thousand Oaks, California [etc.]: Sage, 2016.

Cita MLA (9a ed.)

Hook, Steven W., y John W. Spanier. American Foreign Policy Since World War II. 20th ed. Sage, 2016.