International Symposium on Spatial Accuracy of Natural Resource Data Bases Williamsburg, VA, American Society for Photogrammetry and Remote Sensing, & Congalton, R. G. (1994). Unlocking the puzzle: Proceedings. American Society for Photogrammetry and Remote Sensing.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)International Symposium on Spatial Accuracy of Natural Resource Data Bases Williamsburg, VA, American Society for Photogrammetry and Remote Sensing, و Russell G. Congalton. Unlocking the Puzzle: Proceedings. Bethesda, Md.: American Society for Photogrammetry and Remote Sensing, 1994.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)International Symposium on Spatial Accuracy of Natural Resource Data Bases Williamsburg, VA, et al. Unlocking the Puzzle: Proceedings. American Society for Photogrammetry and Remote Sensing, 1994.