International Symposium on Spatial Data Handling Edinburgh, Scotland, International Geographical Union. Commission on GIS, Association for Geographic Information, Waugh, T. C., & Healey, R. G. (1994). Advances in GIS research: Proceedings of the Sixth International Symposium on Spatial Data Handling. Taylor & Francis.
Παραπομπή σε μορφή Chicago (17η εκδ.)International Symposium on Spatial Data Handling Edinburgh, Scotland, International Geographical Union. Commission on GIS, Association for Geographic Information, Thomas C. Waugh, και Richard G. Healey. Advances in GIS Research: Proceedings of the Sixth International Symposium on Spatial Data Handling. London: Taylor & Francis, 1994.
Παραπομπή σε μορφή MLA (9th εκδ.)International Symposium on Spatial Data Handling Edinburgh, Scotland, et al. Advances in GIS Research: Proceedings of the Sixth International Symposium on Spatial Data Handling. Taylor & Francis, 1994.