Modrzyński, Mikołaj. “Marcin Grulkowski, The Oldest City Books of the Main City of Gdańsk from the 14th Century and the Beginning of the 15th Century: The Codicological Study”. Folia Toruniensia 16 (December 13, 2016): 119–123. Accessed July 17, 2024. https://apcz.umk.pl/FT/article/view/FT.2016.015.