LANE, Jan-Erik. FRIEDRICH LENGER, WERNER SOMBART 1863-1941. Baltic Journal of Political Science, [S. l.], n. 3, p. 153–155, 2015. DOI: 10.15388/BJPS.2014.3.4864. Disponível em: https://www.journals.vu.lt/BJPS/article/view/4864.. Acesso em: 5 may. 2024.