Smith, G. A., & Hayman, G. A. (1987). Geologic map of the Eagle Butte and Gateway quadrangles, Jefferson and Wasco Counties, Oregon. Oregon, Dept. of Geology and Mineral Industries.
Chicago Style (17th ed.) CitationSmith, Gary A., and Glenn A. Hayman. Geologic Map of the Eagle Butte and Gateway Quadrangles, Jefferson and Wasco Counties, Oregon. [Portland, Or.]: Oregon, Dept. of Geology and Mineral Industries, 1987.
MLA (9th ed.) CitationSmith, Gary A., and Glenn A. Hayman. Geologic Map of the Eagle Butte and Gateway Quadrangles, Jefferson and Wasco Counties, Oregon. Oregon, Dept. of Geology and Mineral Industries, 1987.
Warning: These citations may not always be 100% accurate.