Canadian Cartographic Association, University of Ottawa, Douglas, D. H., & Boyle, A. R. (1982). Computer assissted cartography and geographic informationprocessing: Hope and realism. Canadian Cartographic Association. Dept. of Geography, University of Ottawa.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCanadian Cartographic Association, University of Ottawa, David H. Douglas, और A. Raymond Boyle. Computer Assissted Cartography and Geographic Informationprocessing: Hope and Realism. Ottawa: Canadian Cartographic Association. Dept. of Geography, University of Ottawa, 1982.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCanadian Cartographic Association, et al. Computer Assissted Cartography and Geographic Informationprocessing: Hope and Realism. Canadian Cartographic Association. Dept. of Geography, University of Ottawa, 1982.