Geological Survey (U.S.), Diller, J. S., Knowlton, F. H., Lindgren, W., Weed, W. H., & Pirsson, L. V. (1900). Precious-metal mining districts. Government Printing Office.
Cita Chicago Style (17a ed.)Geological Survey (U.S.), J. S. Diller, Frank Hall Knowlton, W. Lindgren, Walter Harvey Weed, y L. V. Pirsson. Precious-metal Mining Districts. Washington, D.C.: Government Printing Office, 1900.
Cita MLA (8a ed.)Geological Survey (U.S.), et al. Precious-metal Mining Districts. Government Printing Office, 1900.
Precaución: Estas citas no son 100% exactas.