Vorwort. In: Herzog Karl Eugen von Württemberg und seine Zeit. [s.l.] : regiopen.books,2023. p. V. DOI: 10.53458/17h26t15. Disponível em: https://books.wlb-stuttgart.de/index.php/regiopen/catalog/book/189/chapter/320. Acesso em: 10 may. 2025.