Cita APA (7a ed.)

U.S. Geological Survey. United States Department of the Interior & Erickson, R. L. (1982). CHARACTERISTICS of mineral deposit occurrences. U.S. Geological Survey. United States Department of the interior.

Cita Chicago Style (17a ed.)

U.S. Geological Survey. United States Department of the Interior y Ralph L. Erickson. CHARACTERISTICS of Mineral Deposit Occurrences. Denver, Co.: U.S. Geological Survey. United States Department of the interior, 1982.

Cita MLA (8a ed.)

U.S. Geological Survey. United States Department of the Interior y Ralph L. Erickson. CHARACTERISTICS of Mineral Deposit Occurrences. U.S. Geological Survey. United States Department of the interior, 1982.