Soule, G. (1939). Sidney Hillman: Labor statesman / by George Soule (Special ed. for members of the Amalgamated Clothing Workers of America.). Macmillan.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSoule, George. Sidney Hillman: Labor Statesman / by George Soule. Special ed. for members of the Amalgamated Clothing Workers of America. New York [u.a.]: Macmillan, 1939.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSoule, George. Sidney Hillman: Labor Statesman / by George Soule. Special ed. for members of the Amalgamated Clothing Workers of America. Macmillan, 1939.
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