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Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Walle, Bartel van de, Paul Burghardt, Kees Nieuwenhuis, Walter J. van Dijk, và Leefdaal Koloriet. Proceedings Of Iscram 2007: The Fourth International Conference on Information Systems for Crisis Management, May 13 - 16, 2007, Delft, the Netherlands. Brussels, Belgium: VUBPress, 2007.
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