ISPRS Commission II/VII International Workshop : University of Maine & International Society for Photogrammetry and Remote Sensing Commission II. (1990). Advances in spatial information extraction and analysis for remote sensing: Proceedings, 13-17 January 1990, University of Maine, Orono, Maine. Society.
Παραπομπή σε μορφή Chicago (17η εκδ.)ISPRS Commission II/VII International Workshop : University of Maine και International Society for Photogrammetry and Remote Sensing Commission II. Advances in Spatial Information Extraction and Analysis for Remote Sensing: Proceedings, 13-17 January 1990, University of Maine, Orono, Maine. Bethesda: Society, 1990.
Παραπομπή σε μορφή MLA (9th εκδ.)ISPRS Commission II/VII International Workshop : University of Maine και International Society for Photogrammetry and Remote Sensing Commission II. Advances in Spatial Information Extraction and Analysis for Remote Sensing: Proceedings, 13-17 January 1990, University of Maine, Orono, Maine. Society, 1990.