Cita APA

United States. Department of the Interior. Bureau of Mines. (1980). Minerals yearbook 1977: Metals and minerals. [S.l.]: Washington : U. S. Goverment Printing Office.

Citación estilo Chicago

United States. Department of the Interior. Bureau of Mines. Minerals Yearbook 1977: Metals and Minerals. [S.l.]: Washington : U. S. Goverment Printing Office, 1980.

Cita MLA

United States. Department of the Interior. Bureau of Mines. Minerals Yearbook 1977: Metals and Minerals. [S.l.]: Washington : U. S. Goverment Printing Office, 1980.