Cita APA (7a ed.)

Gyorgy, A., & Gibbs, H. S. (1956). Problems in international relations. Prentice-Hall International.

Cita Chicago Style (17a ed.)

Gyorgy, Andrew, y Hubert S. Gibbs. Problems in International Relations. Englewood Cliffs, New Jersey: Prentice-Hall International, 1956.

Cita MLA (9a ed.)

Gyorgy, Andrew, y Hubert S. Gibbs. Problems in International Relations. Prentice-Hall International, 1956.