Polk, W. R. (1997). Neighbors & strangers: The fundamentals of foreign affairs. University of Chicago Press.
芝加哥风格引文Polk, William R. Neighbors & Strangers: The Fundamentals of Foreign Affairs. Chicago: University of Chicago Press, 1997.
MLA引文Polk, William R. Neighbors & Strangers: The Fundamentals of Foreign Affairs. University of Chicago Press, 1997.
警告：这些引文格式不一定是100％准确.