APA (7th ed.) Citation

Walker, G. W. (1979). Reconnaissance geologic map of the Oregon part of the Grangeville quadrangle, Baker, Union, Umatilla, and Wallowa counties, Oregon. The Survey.

Chicago Style (17th ed.) Citation

Walker, George Walton. Reconnaissance Geologic Map of the Oregon Part of the Grangeville Quadrangle, Baker, Union, Umatilla, and Wallowa Counties, Oregon. Reston, Va.: The Survey, 1979.

MLA (9th ed.) Citation

Walker, George Walton. Reconnaissance Geologic Map of the Oregon Part of the Grangeville Quadrangle, Baker, Union, Umatilla, and Wallowa Counties, Oregon. The Survey, 1979.