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, [S. l.], v. 16, p. 119–123, 2016. DOI: 10.12775/FT.2016.015. Disponível em: https://apcz.umk.pl/FT/article/view/FT.2016.015. Acesso em: 5 feb. 2025.