Soule, G. (1939). Sidney Hillman: Labor statesman / by George Soule (Special ed. for members of the Amalgamated Clothing Workers of America.). Macmillan.
Chicago-referens (17:e uppl.)Soule, 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.
MLA-referens (8:e uppl.)Soule, George. Sidney Hillman: Labor Statesman / by George Soule. Special ed. for members of the Amalgamated Clothing Workers of America. Macmillan, 1939.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.