Dobbs, Robert. „Praktyczny Wymiar „historical GIS”:„International Journal of Applied Geospatial Research”, Vol. 2 (2011), N. 4: Special Issue on the Past Informing the Future: Applied Geospatial Solutions,ed. R. Dobbs, M.B. Ruvane, Ss. 108 (Bogumił Szady)“. Studia Geohistorica, no. 1 (Juni 9, 2017): 132–133. Zugegriffen Dezember 14, 2025. https://apcz.umk.pl/AZMDDP/article/view/20130.