APA (7th ed.) Citation

Ball, M. M., & Killough, H. B. (1956). International relations. Ronald Press Co.

Chicago Style (17th ed.) Citation

Ball, Mary Margaret, and Hugh Baxter Killough. International Relations. New York: Ronald Press Co, 1956.

MLA (9th ed.) Citation

Ball, Mary Margaret, and Hugh Baxter Killough. International Relations. Ronald Press Co, 1956.