Harrington, M. (1990). Socialism: Past and future. Penguin Books.
芝加哥风格引文Harrington, Michael. Socialism: Past and Future. New York: Penguin Books, 1990.
MLA引文Harrington, Michael. Socialism: Past and Future. Penguin Books, 1990.
警告：这些引文格式不一定是100％准确.