APA (7th ed.) Citation

Geological Survey (U.S.), Fisher, F. S., McIntyre, D. H., & Johnson, K. M. (1992). Geologic map of the Challis 1 x 2 quadrangle, Idaho. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.), Frederick S. Fisher, David H. McIntyre, and Kathleen M. Johnson. Geologic Map of the Challis 1 X 2 Quadrangle, Idaho. Reston, VA: The Survey, 1992.

MLA (8th ed.) Citation

Geological Survey (U.S.), et al. Geologic Map of the Challis 1 X 2 Quadrangle, Idaho. The Survey, 1992.

Warning: These citations may not always be 100% accurate.