SpringerLink (Online service), Hirtle, S. C., & Frank, A. U. (1997). Spatial Information Theory A Theoretical Basis for GIS: International Conference COSIT '97, Laurel Highlands, Pennsylvania, USA, October 15-18, 1997. Proceedings (1st ed. 1997.). Springer Berlin Heidelberg : Imprint: Springer. https://doi.org/10.1007/3-540-63623-4
Παραπομπή σε μορφή Chicago (17η εκδ.)SpringerLink (Online service), Stephen C. Hirtle, και Andrew U. Frank. Spatial Information Theory A Theoretical Basis for GIS: International Conference COSIT '97, Laurel Highlands, Pennsylvania, USA, October 15-18, 1997. Proceedings. 1st ed. 1997. Berlin, Heidelberg: Springer Berlin Heidelberg : Imprint: Springer, 1997. https://doi.org/10.1007/3-540-63623-4.
Παραπομπή σε μορφή MLA (8th εκδ.)SpringerLink (Online service), et al. Spatial Information Theory A Theoretical Basis for GIS: International Conference COSIT '97, Laurel Highlands, Pennsylvania, USA, October 15-18, 1997. Proceedings. 1st ed. 1997. Springer Berlin Heidelberg : Imprint: Springer, 1997. https://doi.org/10.1007/3-540-63623-4.
