Soule, G. H. (1939). Sidney Hillman: Labor statesman. Macmillan.
芝加哥风格引文Soule, George Henry. Sidney Hillman: Labor Statesman. New York: Macmillan, 1939.
MLA引文Soule, George Henry. Sidney Hillman: Labor Statesman. Macmillan, 1939.
警告：这些引文格式不一定是100％准确.