TRAUTWEIN, K. 50 Jahre Kirchenchor Schöntal / Markusgemeinde. Backnanger Jahrbuch, [S. l.], v. 17, p. 309–310, 2009. DOI: 10.53458/bjb.v17i.9390. Disponível em: https://journals.wlb-stuttgart.de/ojs/index.php/bjb/article/view/9390. Acesso em: 3 juli. 2024.