APA (7th ed.) Citation

Geological Survey (U.S.), Washington (State). Division of Geology and Earth Resources, Evarts, R. C., & Ashley, R. P. (1993). Geologic map of the Cowlitz Falls quadrangle, Lewis and Skamania counties, Washington. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.), Washington (State). Division of Geology and Earth Resources, Russell C. Evarts, and Roger P. Ashley. Geologic Map of the Cowlitz Falls Quadrangle, Lewis and Skamania Counties, Washington. Reston, VA: The Survey, 1993.

MLA (9th ed.) Citation

Geological Survey (U.S.), et al. Geologic Map of the Cowlitz Falls Quadrangle, Lewis and Skamania Counties, Washington. The Survey, 1993.