Cita APA (7th ed.)

United States. Dept. of Labor. (1979). Important events in American labor history, 1778-1978. The Dept. : for sale by the Supt. of Docs., U.S. Govt. Print. Off..

Cita Chicago (17th ed.)

United States. Dept. of Labor. Important Events in American Labor History, 1778-1978. [Washington, D.C.]: The Dept. : for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1979.

Cita MLA (8th ed.)

United States. Dept. of Labor. Important Events in American Labor History, 1778-1978. The Dept. : for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1979.