ACSM-ASPRS Annual Convention Baltimore, Maryland, American Congress on Surveying and Mapping, & American Society for Photogrammetry and Remote Sensing. (1987). Technical papers. American Society for Photogrammetry and Remote Sensing : American Congress on Surveying and Mapping.
Chicago Style (17th ed.) CitationACSM-ASPRS Annual Convention Baltimore, Maryland, American Congress on Surveying and Mapping, and American Society for Photogrammetry and Remote Sensing. Technical Papers. Falls Church, Va.: American Society for Photogrammetry and Remote Sensing : American Congress on Surveying and Mapping, 1987.
MLA (8th ed.) CitationACSM-ASPRS Annual Convention Baltimore, Maryland, et al. Technical Papers. American Society for Photogrammetry and Remote Sensing : American Congress on Surveying and Mapping, 1987.