TROEBST, S. Groueff, Stephane: The Crown of Thorns. The Reign of King Boris III of Bulgaria, 1918—1943. Südost-Forschungen, [S. l.], v. 1, n. 1, p. 419–420, 2021. Disponível em: https://www.suedost-forschungen.de/portal/index.php/sof/article/view/8828. Acesso em: 14 mai. 2024.