APA (7th ed.) Citation

Geological Survey (U.S.), United States. National Park Service, & Richter, D. H. (2016). Geologic map of the Valdez D-1 and D-2 quadrangles (Mount Wrangell Volcano), Alaska. U.S. Department of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.), United States. National Park Service, and Donald H. Richter. Geologic Map of the Valdez D-1 and D-2 Quadrangles (Mount Wrangell Volcano), Alaska. Reston, Virginia: U.S. Department of the Interior, U.S. Geological Survey, 2016.

MLA (9th ed.) Citation

Geological Survey (U.S.), et al. Geologic Map of the Valdez D-1 and D-2 Quadrangles (Mount Wrangell Volcano), Alaska. U.S. Department of the Interior, U.S. Geological Survey, 2016.