APA (7th ed.) Citation

Geological Survey (U.S.), Theobald, P. K., & Barton, H. N. (1988). Maps showing anomalous concentrations of zinc, silver, antimony, manganese, barium and strontium in stream sediment and heavy-mineral concentrate from parts of the Ajo and Lukeville 1?x 2?quadrangles, Arizona. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.), P. K. Theobald, and Harlan N. Barton. Maps Showing Anomalous Concentrations of Zinc, Silver, Antimony, Manganese, Barium and Strontium in Stream Sediment and Heavy-mineral Concentrate from Parts of the Ajo and Lukeville 1?x 2?quadrangles, Arizona. Reston, Va.: The Survey, 1988.

MLA (9th ed.) Citation

Geological Survey (U.S.), et al. Maps Showing Anomalous Concentrations of Zinc, Silver, Antimony, Manganese, Barium and Strontium in Stream Sediment and Heavy-mineral Concentrate from Parts of the Ajo and Lukeville 1?x 2?quadrangles, Arizona. The Survey, 1988.