Troebst, S. „Crampton, Richard J.: Bulgaria 1878—1918. A History; Crampton, Richard J.: A Short History of Modern Bulgaria“. Südost-Forschungen, Bd. 1, Nr. 1, November 2021, S. 462-8, https://www.suedost-forschungen.de/portal/index.php/sof/article/view/8963.