SJÖSTRÖM, Oskar. Göran Nilzén, Carl Gyllenborg. En frihetstida hattpolitiker, Stockholm: Carlssons, 2007. (327 s.). 1700-tal: Nordic Journal for Eighteenth-Century Studies, Tromsø, Norway, v. 5, p. 131–132, 2014. DOI: 10.7557/4.2867. Disponível em: https://septentrio.uit.no/index.php/1700/article/view/2867. Acesso em: 2 may. 2026.