APA (7th ed.) Citation

Powers, P. S., Varnes, D. J., & Savage, W. Z. (1992). Digital elevation models for Slumgullion landslide, Hinsdale County, Colorado, based on 1985 and 1990 aerial photography. U.S. Dept. of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Powers, Philip S., David J. Varnes, and William Z. Savage. Digital Elevation Models for Slumgullion Landslide, Hinsdale County, Colorado, Based on 1985 and 1990 Aerial Photography. Denver, Colo.: U.S. Dept. of the Interior, U.S. Geological Survey, 1992.

MLA (9th ed.) Citation

Powers, Philip S., et al. Digital Elevation Models for Slumgullion Landslide, Hinsdale County, Colorado, Based on 1985 and 1990 Aerial Photography. U.S. Dept. of the Interior, U.S. Geological Survey, 1992.