Team, U. S. G. S. N. M. R. A. (2000). 1998 assessment of undiscovered deposits of gold, silver, copper, lead, and zinc in the United States. US Geological Survey circular 1178.
Citação norma ChicagoTeam, United States Geological Survey National Mineral Resource Assessment. "1998 Assessment of Undiscovered Deposits of Gold, Silver, Copper, Lead, and Zinc in the United States." US Geological Survey Circular 1178 2000.
Citação norma MLATeam, United States Geological Survey National Mineral Resource Assessment. "1998 Assessment of Undiscovered Deposits of Gold, Silver, Copper, Lead, and Zinc in the United States." US Geological Survey Circular 1178 2000.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.