Gaya APA

Usery, W, ,, J, &, S, J. (1976). Brief history of the American labor movement: U.S. Departement of Labor Bureau of Labor Statistic. . Tt: tt United States Imformation Agency.

Gaya MLA

Usery, W.J., ,, Jr., &, Shiskin,, Julius. "Brief history of the American labor movement: U.S. Departement of Labor Bureau of Labor Statistic. ". Tt: tt United States Imformation Agency, 1976. Buku.