Geological Survey (U.S.), Edwards, K., & Batson, R. M. (1992). Experimental digital shaded-relief maps of Oregon: Digital shaded relief with color-coded elevations. The Survey.
Chicago Style (17th ed.) CitationGeological Survey (U.S.), Kathleen Edwards, and Raymond M. Batson. Experimental Digital Shaded-relief Maps of Oregon: Digital Shaded Relief with Color-coded Elevations. Reston, VA: The Survey, 1992.
MLA (9th ed.) CitationGeological Survey (U.S.), et al. Experimental Digital Shaded-relief Maps of Oregon: Digital Shaded Relief with Color-coded Elevations. The Survey, 1992.
Warning: These citations may not always be 100% accurate.