GIS/LIS '91 Atlanta, GA, American Congress on Surveying and Mapping, & American Society for Photogrammetry and Remote Sensing. (1991). GIS/LIS '91: Proceedings. American Society for Photogrammetry and Remote Sensing : American Congress on Surveying and Mapping.
Chicago Style (17th ed.) CitationGIS/LIS '91 Atlanta, GA, American Congress on Surveying and Mapping, and American Society for Photogrammetry and Remote Sensing. GIS/LIS '91: Proceedings. Bethesda, MD: American Society for Photogrammetry and Remote Sensing : American Congress on Surveying and Mapping, 1991.
MLA (9th ed.) CitationGIS/LIS '91 Atlanta, GA, et al. GIS/LIS '91: Proceedings. American Society for Photogrammetry and Remote Sensing : American Congress on Surveying and Mapping, 1991.
Warning: These citations may not always be 100% accurate.