International Symposium on Spatial Data Handling Delft, Netherlands, International Geographical Union Commission on GIS, Kraak, M., Molenaar, M., & Fendel, E. M. (1997). Advances in GIS research II: Proceedings of the seventh International Symposium on Spatial Data Handling. Taylor and Francis.
Παραπομπή σε μορφή Chicago (17η εκδ.)International Symposium on Spatial Data Handling Delft, Netherlands, International Geographical Union Commission on GIS, Menno-Jan Kraak, M. Molenaar, και Elfriede M. Fendel. Advances in GIS Research II: Proceedings of the Seventh International Symposium on Spatial Data Handling. London: Taylor and Francis, 1997.
Παραπομπή σε μορφή MLA (9th εκδ.)International Symposium on Spatial Data Handling Delft, Netherlands, et al. Advances in GIS Research II: Proceedings of the Seventh International Symposium on Spatial Data Handling. Taylor and Francis, 1997.