Labor research association & Capitalism. (1931). Labor fact book [I]- prepared by Labor research association. International publishers.
Chicago-referens (17:e uppl.)Labor research association och Capitalism. Labor Fact Book [I]- Prepared by Labor Research Association. New York: International publishers, 1931.
MLA-referens (9:e uppl.)Labor research association och Capitalism. Labor Fact Book [I]- Prepared by Labor Research Association. International publishers, 1931.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.