Workers' Defense League. Workers defense bulletin: Official monthly organ of the Workers Defense League. The League.
Chicago-referens (17:e uppl.)Workers' Defense League. Workers Defense Bulletin: Official Monthly Organ of the Workers Defense League. New York: The League.
MLA-referens (8:e uppl.)Workers' Defense League. Workers Defense Bulletin: Official Monthly Organ of the Workers Defense League. The League.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.