Hughes, J. (1990). American economic history (3rd. ed.). HarperCollins.
芝加哥风格引文Hughes, Jonathan. American Economic History. 3rd. ed. New York: HarperCollins, 1990.
MLA引文Hughes, Jonathan. American Economic History. 3rd. ed. HarperCollins, 1990.
警告：这些引文格式不一定是100％准确.