APA (7th ed.) Citation

Geological Survey (U.S.) & Richter, D. H. (1986). Maps showing mineral resource assessment of the Silver City 1 x 2?quadrangle, New Mexico and Arizona. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.) and Donald H. Richter. Maps Showing Mineral Resource Assessment of the Silver City 1 X 2?quadrangle, New Mexico and Arizona. [Reston, Va.]: The Survey, 1986.

MLA (9th ed.) Citation

Geological Survey (U.S.) and Donald H. Richter. Maps Showing Mineral Resource Assessment of the Silver City 1 X 2?quadrangle, New Mexico and Arizona. The Survey, 1986.