Flynn, E. G. (1949). Labor's own William Z. Foster: A Communist's fifty years of working-class leadership and struggle. New York: New Century Publishers.

Flynn, Elizabeth Gurley. Labor's Own William Z. Foster: A Communist's Fifty Years of Working-class Leadership and Struggle. New York: New Century Publishers, 1949.

Flynn, Elizabeth Gurley. Labor's Own William Z. Foster: A Communist's Fifty Years of Working-class Leadership and Struggle. New York: New Century Publishers, 1949.