Παραπομπή APA
United States Department of Labor. (1950). Brief history of the American labor movement. Washington: U.S. Government Printing Office.
Παραπομπή Chicago StyleUnited States Department of Labor. Brief History of the American Labor Movement. Washington: U.S. Government Printing Office, 1950.
Παραπομπή MLAUnited States Department of Labor. Brief History of the American Labor Movement. Washington: U.S. Government Printing Office, 1950.
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