United States. Bureau of Labor Statistics. Brief history of the American Labor movement. U.S. Government Printing Office.
Chicago-Zitierstil (17. Ausg.)United States. Bureau of Labor Statistics. Brief History of the American Labor Movement. Washington: U.S. Government Printing Office.
MLA-Zitierstil (8. Ausg.)United States. Bureau of Labor Statistics. Brief History of the American Labor Movement. U.S. Government Printing Office.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.