HERMSEN, H. Y. Schaaf, Laarzen op de Lange Pijp. Leeuwarden in de Tweede Wereldoorlog. BMGN - Low Countries Historical Review, [S. l.], v. 110, n. 3, p. 463–464, 1995. DOI: 10.18352/bmgn-lchr.4110. Disponível em: https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-104722. Acesso em: 8 feb. 2023.