International Symposium on Advances in Geographic Information Systems & Association for Computing Machinery. (1998). ACM-GIS ...: Proceedings of the ... International Symposium on Advances in Geographic Information Systems. Association for Computing Machinery.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)International Symposium on Advances in Geographic Information Systems و Association for Computing Machinery. ACM-GIS ...: Proceedings of the ... International Symposium on Advances in Geographic Information Systems. New York, N.Y.: Association for Computing Machinery, 1998.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)International Symposium on Advances in Geographic Information Systems و Association for Computing Machinery. ACM-GIS ...: Proceedings of the ... International Symposium on Advances in Geographic Information Systems. Association for Computing Machinery, 1998.