Ball, M. M., & Killough, H. B. (1956). International relations. Ronald Press Co.
芝加哥风格引文Ball, Mary Margaret, 与 Hugh Baxter Killough. International Relations. New York: Ronald Press Co, 1956.
MLA引文Ball, Mary Margaret, 与 Hugh Baxter Killough. International Relations. Ronald Press Co, 1956.
警告：这些引文格式不一定是100％准确.