APA (7th ed.) Citation

Geological Survey (U.S.), Conterminous United States Mineral Assessment Program, Peterson, J. A., Cox, D. P., & Gray, F. (1987). Mineral resource assessment of the Ajo and Lukeville 1?by 2?quadrangles, Arizona. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.), Conterminous United States Mineral Assessment Program, Jocelyn A. Peterson, Dennis P. Cox, and Floyd Gray. Mineral Resource Assessment of the Ajo and Lukeville 1?by 2?quadrangles, Arizona. Reston, Va.: The Survey, 1987.

MLA (9th ed.) Citation

Geological Survey (U.S.), et al. Mineral Resource Assessment of the Ajo and Lukeville 1?by 2?quadrangles, Arizona. The Survey, 1987.