International conference on spatial information theory :Kartause Ittingen, Kuhn, W., Timpf, S., & Worboys, M. F. Spatial information theory: Foundations of geographic information science : international conference, COSIT 2003, Kartause Ittingen, Switzerland, September 24-28, 2003 : proceedings. Springer.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)International conference on spatial information theory :Kartause Ittingen, Werner Kuhn, Sabine Timpf, و Michael F. Worboys. Spatial Information Theory: Foundations of Geographic Information Science : International Conference, COSIT 2003, Kartause Ittingen, Switzerland, September 24-28, 2003 : Proceedings. Berlin [etc.]: Springer.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)International conference on spatial information theory :Kartause Ittingen, et al. Spatial Information Theory: Foundations of Geographic Information Science : International Conference, COSIT 2003, Kartause Ittingen, Switzerland, September 24-28, 2003 : Proceedings. Springer.