LESSER, J. Oberst Andreas Undall’s Selvbiografi. Personalhistorisk Tidsskrift, [S. l.], v. 29, n. 5_05, p. 207–232, 1908. Disponível em: https://tidsskrift.dk/personalhistorisk_tidsskrift/article/view/79965. Acesso em: 8 nov. 2024.