APA (7th ed.) Citation

Ball, M. M., & Killough, H. B. (1956). International relations: [by] M. Margaret Ball and Hugh B. Killough. Ronald Press Co..

Chicago Style (17th ed.) Citation

Ball, M. Margaret, and Hugh Baxter Killough. International Relations: [by] M. Margaret Ball and Hugh B. Killough. New York: Ronald Press Co., 1956.

MLA (9th ed.) Citation

Ball, M. Margaret, and Hugh Baxter Killough. International Relations: [by] M. Margaret Ball and Hugh B. Killough. Ronald Press Co., 1956.