Cita APA

USA Bureau of Labor Statistics. (1957). Brief history of the American labor movement. U.S. Gov. Print. Office.

Citación estilo Chicago

USA Bureau of Labor Statistics. Brief History of the American Labor Movement. Washington, DC: U.S. Gov. Print. Office, 1957.

Cita MLA

USA Bureau of Labor Statistics. Brief History of the American Labor Movement. U.S. Gov. Print. Office, 1957.