APA

United States, .Minerals yearbook. Washington: Bureau of Mines, U.S. Dept. of the Interior, U.S. Geological Survey.

Chicago

United States, .Minerals yearbook. Washington: Bureau of Mines, U.S. Dept. of the Interior, U.S. Geological Survey.

Harvard

United States, .Minerals yearbook. Washington: Bureau of Mines, U.S. Dept. of the Interior, U.S. Geological Survey.

MLA

United States, .Washington: Bureau of Mines, U.S. Dept. of the Interior, U.S. Geological Survey. .