APA (7th ed.) Citation

Geological Survey (U.S.) & Geological Survey (U.S.). (1898). Preliminary map of western Oregon, showing the density of merchantable timber, expressed in feet, B.M. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.) and Geological Survey (U.S.). Preliminary Map of Western Oregon, Showing the Density of Merchantable Timber, Expressed in Feet, B.M. [Washington, D.C.]: The Survey, 1898.

MLA (9th ed.) Citation

Geological Survey (U.S.) and Geological Survey (U.S.). Preliminary Map of Western Oregon, Showing the Density of Merchantable Timber, Expressed in Feet, B.M. The Survey, 1898.