Jennings, W. W. (1928). Introduction to American economic history. Thomas Y. Crowell.
芝加哥风格引文Jennings, Walter Wilson. Introduction to American Economic History. New York: Thomas Y. Crowell, 1928.
MLA引文Jennings, Walter Wilson. Introduction to American Economic History. Thomas Y. Crowell, 1928.
警告：这些引文格式不一定是100％准确.