APA (7th ed.) Citation

Stoffel, K. L. (1991). Geologic map of Washington-northeast quadrant. Washington, Division of Geology and Earth Resources.

Chicago Style (17th ed.) Citation

Stoffel, Keith L. Geologic Map of Washington-northeast Quadrant. [Olympia, Wash.]: Washington, Division of Geology and Earth Resources, 1991.

MLA (9th ed.) Citation

Stoffel, Keith L. Geologic Map of Washington-northeast Quadrant. Washington, Division of Geology and Earth Resources, 1991.