APA (7th ed.) Citation

Geological Survey (U.S.), United States. Forest Service. Pacific Northwest Region, & Washington (State). Department of Natural Resources. (1981). Mount St. Helens and vicinity, Washington-Oregon. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.), United States. Forest Service. Pacific Northwest Region, and Washington (State). Department of Natural Resources. Mount St. Helens and Vicinity, Washington-Oregon. Reston, Va.: The Survey, 1981.

MLA (9th ed.) Citation

Geological Survey (U.S.), et al. Mount St. Helens and Vicinity, Washington-Oregon. The Survey, 1981.