APA (7th ed.) Citation

Geological Survey (U.S.) & Eppinger, R. G. (1990). Mineral resources of the Gibraltar Mountain and Planet Peak wilderness study areas, La Paz County, Arizona. U.S. Dept. of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.) and R. G. Eppinger. Mineral Resources of the Gibraltar Mountain and Planet Peak Wilderness Study Areas, La Paz County, Arizona. [Reston, Va.]: U.S. Dept. of the Interior, U.S. Geological Survey, 1990.

MLA (9th ed.) Citation

Geological Survey (U.S.) and R. G. Eppinger. Mineral Resources of the Gibraltar Mountain and Planet Peak Wilderness Study Areas, La Paz County, Arizona. U.S. Dept. of the Interior, U.S. Geological Survey, 1990.