MOLEWSKI, Paweł, WASIK, Bogusz and WIEWIÓRA, Marcin. An attempt to reconstruct selected elements the original site topography of the Teutonic castles at Unisław and Starogród (Chełmno Land, Northern Poland) based on archaeological and cartographic data. Bulletin of Geography. Physical Geography Series. Online. 16 April 2018. No. 15, pp. 15-26. [Accessed 23 January 2026]. DOI 10.2478/bgeo-2018-0012.