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.
Chicago (17e ed.) BronvermeldingInternational Symposium on Spatial Data Handling Edinburgh, Scotland, International Geographical Union. Commission on GIS, Association for Geographic Information, Thomas C. Waugh, en Richard G. Healey. Advances in GIS Research: Proceedings of the Sixth International Symposium on Spatial Data Handling. London: Taylor & Francis, 1994.
MLA (9e ed.) BronvermeldingInternational 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.